The
Ottawa Kernel Summit managed
to get through its agenda with almost no discussion of SCO, despite the
fact that SCO had just told those developers that they need to purchase a
binary licence in order to be able to run their own code. The IBM
employees present were, without exception, entirely quiet on the whole
situation - but they also radiated a sort of calm confidence that was
impossible to miss. In general, at both the Summit and OLS, it was
difficult to find anybody who was genuinely worried about SCO and its
actions.
There are exceptions, of course, but it appears that much of the Linux
community has come to the conclusion that IBM's lawyers will make the whole
SCO problem go away. There are certainly reasons to feel that way. IBM's
legal team inspires fear in many, especially when intellectual property
issues are at stake. And IBM's interests align reasonably well with the
wider community's interests in this case. IBM wants a commodity operating
system platform which is free of external proprietary interests; with such
a platform, IBM is well positioned to sell its hardware, services, and
proprietary add-ons. So it would suit IBM to see SCO defeated in a manner
that would strongly discourage any other enterprising bandits from
attempting the same sort of heist.
Still, IBM is not the Linux community, and its interests are not
exactly the same. It is conceivable (though unlikely) that IBM could
eventually reach a settlement with SCO that ends the case, but leaves a
number of users and developers in an uncertain legal position. And IBM has no
particular incentive to defend Linux users against any future copyrights
suits filed by SCO - especially if the victims are not IBM customers.
We all have high hopes for IBM's defense in this case. But the Linux
community has a problem with SCO that is different from IBM's problem, and
expecting IBM to fix it for us could prove to be a big mistake. We need to
find ways of ending SCO's constant attacks on Linux developers and users.
SCO's attempt to hijack and put a tax on Linux cannot be allowed to
succeed.
The challenges which have quieted SCO in Germany (and, with luck, will have
the same effect in Australia) show one way forward. SCO's attacks on Linux
are slanderous, and its attacks on Linux developers head toward libel. The
company needs to be made to put up its evidence or back down from its
claims. This especially needs to happen in the U.S.
SCO also continues to distribute the 2.4 kernel - get
your copy here. LWN downloaded a copy of this kernel on July 30,
2003; the date on SCO's server is May 9. This kernel lacks some of
the disputed developments (e.g. RCU), but SCO has made it clear that it
objects to code in all of the 2.4 kernels. So what we have here is SCO
distributing code over which it claims proprietary rights as a derived
product containing a great deal of uncontested, GPL-licensed code. That
is, of course, a clear violation of the GPL. One can only hope that SCO's
attitude toward copyright and licensing will come up at the IBM trial. But
the situation would certainly be helped if one or more developers with
copyrighted code in the kernel would bring an infringement case against
SCO. That would be a counteroffensive which would attract some
attention.
SCO is not just IBM's problem; the company has made it clear that it plans
to cast its legal net far more widely than that. So it is important that
IBM not be SCO's only problem. If we sit back and wait for IBM to clean up
this mess, we may not get the thorough and complete job that we truly
need.
Comments (10 posted)
[This article was contributed by Joe 'Zonker' Brockmeier]
The Kroupware Project, announced last
October, has been finished and released as Kolab. The project began last
September when three companies, Erfrakon, Intevation GmbH and Klarälvdalens
Datakonsult won a bid to create a free software groupware solution
for Germany's federal agency for IT security, the Bundesamt für
Sicherheit in der Informationstechnik (BSI). The goal was to create an
end-to-end groupware solution, both client-side and server-side
software, entirely from free software.
Instead of starting from scratch, which is where many free software
projects fail, Kroupware was based on existing projects. The Kolab
Server is made up of existing projects like Apache, Postfix, OpenLDAP and the Simple Authentication and Security
Layer (SASL). The KDE Kolab client is made up of several existing
programs for KDE, including KMail, Kontact and KDE PIM. Another project
is underway to create an all-in-one groupware client for KDE called Kontact and work is being done on a
webmail client as well.
The suite supports e-mail (POP3 and IMAP4), calendaring, global and
private addressbooks, vacation notices, notes, synchronization with Palm
OS devices, task lists and a number of other features that companies and
organizations are looking for in a groupware suite. The server is
managed using a Web-based interface. Almost all of the protocols used,
with the notable exception of Palm's HotSync Protocol, are Internet Engineering Task Force (IETF)
standards.
The project isn't aimed solely at any Linux distribution, or Linux alone
for that matter. The Kolab server should run on just about any Unix-like
system that runs Apache, Postfix, OpenLDAP and the other components that
make up the server. On the client side, Windows users can fully access
the Kolab Server groupware functions using Outlook and the Bynari
Insight Connector Plugin. Note that the Bynari software is proprietary,
but there is work being done by a third-party to create a free software connector.
Other Windows groupware clients may work as well if an organization
prefers to run Windows, or a mix of Windows and Linux, on the desktop.
It's good to see a fully open source, end-to-end, groupware solution
being made available. Particularly one that allows Windows users and
Linux users to share the same groupware server and allow companies to
deploy Linux in some parts of their business without having to make an
all-or-nothing commitment.
It will be interesting to see whether vendors are quick to embrace Kolab
after developing their own groupware solutions. A single, standard, open
source groupware solution could do a lot to boost Linux though it might
hinder sales of products like Openexchange Server or Ximian Connector.
This is yet another piece of the puzzle that could allow Linux to gain
significant share of the desktop market. At the moment, installation and
configuration of the suite is still a bit rough for companies who are
used to buying pre-packaged solutions. However, it should not be
difficult for Linux distributors or other vendors to smooth over the
installation process a bit and create a value-added product based on
Kolab. And, of course, work continues on Kolab even though the Kroupware
Project has been declared "complete." It seems as if legal challenges
and perception are now the greatest obstacles to adoption of Linux on
the desktop.
Comments (1 posted)
The 2003 Ottawa Linux Symposium has run its course. Once again, OLS has
established itself as the premier North American Linux developers'
conference. A solid roster of speakers delivered four days' worth of
![[Ottawa]](/images/ns/parliament-sm.jpg)
intensely technical talks on where Linux development (and kernel
development in particular) is headed. It is always nice to attend an event
where the talk is technical and nobody is trying to sell you anything.
Your editor was not able to attend all of the presentations, of course, and
did not write up every one he attended. Below, however, you'll find quick
summaries of several of the more interesting talks given at OLS this year.
Those looking for all the details can find them in the OLS 2003
Proceedings.
In response to popular demand (i.e. somebody actually asked), I
have also put up the slides for my talk on
porting drivers to the new kernel. Giving this sort of talk at OLS is a
unique challenge, given that, for any topic, there's certain to be at least
one person in the audience who knows way more than the speaker. Happily,
the hecklers were kind...
Thanks are due to the OLS organizers for putting together another
high-quality event, for the event's sponsors for helping making it
possible, and to all the speakers for presenting their work.
Ugly ducklings - resurrecting unmaintained code
Dave Jone's talk covered the work he has done in 2.5 to fix up the MTRR and
AGPGART drivers. Dave has observed a common sort of lifecycle for
drivers. A driver is initially written for a specific vendor's widget.
Over time, it is extended to support compatible widgets from other vendors,
then slightly different widgets from yet other vendors. The number of
special cases increases. Meanwhile, the maintainer gets bored and moves
on. Eventually you end up with thousands of lines of spaghetti which is
unmaintainable.
Dave's approach to such drivers includes splitting code into separate files
by vendor (usually) and separating code which should never have been run
together in the first place. "Useless abstractions" can be cleaned out.
Eventually you end up with a code body which is sufficiently clean and
understandable that it can be updated for modern hardware, new features,
etc. But one should not underestimate the amount of work it can take to
get there.
Large projects and bugzilla
Luis Villa discussed his experience working as GNOME's quality
assurance person. He has, he estimates, read some 30,000 bug reports over
the last few years. The experience appears to not have warped him
too badly, though such things can take years to show.
He is, as one might expect, a strong proponent of organized bug tracking.
A good QA system, he says, makes writing software easier (through
reductions in mailing list traffic, among other things), eases the release
process, makes the software better, and, important, makes writing software
more fun.
The key point of the talk, perhaps, was that QA people have less power in
free software projects than they do in the proprietary world. That makes
it even more imperative that they not forget that they are providing a
service to the developers, and that they have to understand what the
developers need from them. Filtering ("triage") is especially important;
developers should not have to deal directly with the full flow of bug
reports. If the bug trackers are providing the sort of bug filtering and
categorization that the hackers need, all will be well. Otherwise the bug
tracking system will degenerate into an unused pile of old information.
Interactive kernel performance
Robert Love's talk covered work done in the 2.5 kernel to improve
interactive performance. What's interactive? Robert takes a wide view;
interactive applications are "everything except Oracle." The topics
covered will be familiar to LWN Kernel Page readers; they include the
anticipatory disk scheduler, the O(1) process scheduler, the preemptible
kernel and other low-latency work, etc. In his opinion, the single most
important bit of work to go in this time around (with regard to interactive
performance) is the anticipatory scheduler.
udev - devfs done right
Greg Kroah-Hartman described udev, his user-space devfs replacement
(covered here
last April) in a
standing room only session. Progress on udev has been slow since April
(Greg has been busy with other stuff), but some things have happened.
There is now a set of configuration files to allow the user to specify how
device naming and permissions should be handled; it uses various attributes
of a device (it's serial number, label, position in the bus topology,
etc.) to figure out what the system administrator would like it to be
called. Future versions will use the "tdb" database to track devices and
handle persistent naming.
Future work includes changing udev to run as a daemon process; this change
is required to properly handle out-of-order hotplug events. For those
wanting to experiment with it, the udev code
can be found on kernel.org in /pub/linux/utils/kernel/hotplug/.
Why doesn't my laptop suspend?
Pat Mochel's talk was on power management, or "why doesn't my laptop
suspend?" He asked for a show of hands: how many in the audience have
laptops? Well, this is OLS, so most of the attendees raised their hands.
How many of those suspend correctly? Most hands went down.
Older, APM-based machines would handle suspend operations entirely in the
firmware; it "just worked" for most people. Newer ACPI systems, however,
push the
suspend task into the software; this is evidently an improvement. And
Linux software has not yet caught up
with that. ACPI support is pretty much in place, but that is the easy
part. The harder part is working power management support into all the
drivers, coming up with a reliable way of suspending the system, and
implementing a reasonable user-level interface to it all.
Much of this work has been done for 2.5; it still languishes in Pat's tree,
however, and has not been merged into the mainline. The changes include a
new set of driver power management methods; there is also a cleaned up software
suspend subsystem with a safer snapshot mechanism and the ability to write
the system image to any persistent media.
Pat has said that he will finish this work, though it was clear that he
would appreciate some help from other developers as well. His hope is to
get the work merged by August 20. Should he be successful,
appreciative users should send him a birthday present ("small, unmarked
bills") on that day.
Toward an O(1) VM
Rik van Riel discussed recent work with virtual memory management; the talk
covered page replacement strategies, the reverse mapping VM, etc. The key
point of his talk, however, was this: by many metrics relevent to VM, our
newer, "faster" machines are actually slower. Over the years, the time
required to perform tasks like reading an entire disk, or writing a system's
entire RAM to disk, has gone up by a couple of orders of magnitude or more.
Much of the previous century's research into VM is losing its relevance as
memory and disk sizes increases faster then the transfer speeds between
them. VM hackers increasingly find themselves having to make things up as
they go.
Integrating DMA into the device model
James Bottomley discussed the new generic DMA layer; these functions have
been documented in
this article, which is
part of the LWN driver porting series. What was new in this talk is
James's discussion of where the DMA API needs to go in the future. The
current version has no way of returning a failure code from the DMA mapping
routines. But failure can happen: a system can run out of I/O memory
management unit space, a problem which will be exacerbated in the future as
GART hardware is used as a poor man's IOMMU. At some point, that sort of
failure must be communicated back to the caller.
Device drivers can provide a DMA mask describing the range of addresses
that their devices can handle. But there is no way for the system to pass
back a mask saying which addresses the device needs to handle.
Better performance can often be maintained when devices are operated in
their smaller-memory modes; the system should provide the information that
allows those modes to be used when they are applicable. Finally, the
current approach to cache coherency needs some work; drivers should be able
to find out just how coherency works on the host system. The means by
which the CPU and peripherals share DMA buffers needs to be reorganized
into a straightforward ownership model; in the current system, it is not
always clear who has the right to change a buffer, and that can lead to
data corruption.
The party
Your reporter was going to write up the legendary OLS closing party at the
Black Thorn, but the whole event has become somewhat fuzzy and difficult to
recall. Suffice to say that a lot of fun was had.
Comments (21 posted)
Page editor: Jonathan Corbet
Security
Brief items
A recent Bugtraq posting came with the
following statement:
I have discovered a signed/unsigned issue in a routine responsible
for demarshalling XDR data for NFSv3 procedure calls. As far as I
can tell, this bug has existed since NFSv3 support was
integrated. It has been silently fixed in 2.4.21.
This bug allows a remote attacker who can send packets to an NFSv3 server
to overwrite memory and bring the system down. It would appear to be a
hard vulnerability to exploit for anything beyond a denial of service,
however.
The problem was not fixed entirely silently in 2.4.21; the relevant
changelog entry reads "Avoid oops when NFSD decodes enourmous filehandle."
Still, the fix has not been all that widely advertised either; there have
been no alerts reading "systems running 2.4.20 and prior kernels may be
subject to a denial of service vulnerability." In that sense, this was a
classic "quiet fix."
There are advantages to quiet fixes when nobody is known to be exploiting
the problem. With luck, the fix will be widely deployed before anybody
notices the problem. If all goes well, many vulnerable installations can
be protected before anybody begins to exploit the problem, and without the
need for a panic update.
These advantages need to be weighed against a couple of problems with quiet
fixes, however. One is that crackers do watch changelogs and patch
releases, hoping to find just this sort of fix. And the other is that many
sites may continue to run vulnerable code because nobody has told them that
there is a problem.
If you run any NFS servers with kernels older than 2.4.21, this is your
notice that you may want to look into an upgrade. So far, nobody has been
hurt by the quiet nature of this particular fix. Even so, it would have
been better to treat it as the true security hole that it is.
Comments (3 posted)
New vulnerabilities
Apache: denial of service vulnerabilities
| Package(s): | apache |
CVE #(s): | CAN-2003-0460
|
| Created: | July 24, 2003 |
Updated: | July 30, 2003 |
| Description: |
The Apache Software Foundation and The Apache Server Project
released
a new version of the Apache webserver which addresses the
following security vulnerabilities:
Denial of service
(VU #379828)
Ryan O'Neill reported that it is possible to make the httpd server
enter infinite loops and crash under certain circumstances. A new
configuration directive has been created (LimitInternalRecursion) to
avoid these infinite loops and abort the request which caused them if
the configured limit has been reached.
File descriptor leak
Leaks of several file descriptors to child processes, such as CGI
scripts, were fixed. |
| Alerts: |
|
Comments (none posted)
konqueror: information disclosure vulnerability
| Package(s): | kde konqueror |
CVE #(s): | CAN-2003-0459
|
| Created: | July 30, 2003 |
Updated: | August 11, 2003 |
| Description: |
All versions of Konqueror through KDE 3.1.2 contain a vulnerability wherein
the browser could (in rare situations) send authentication information on
an unrelated web site. See this advisory
for details. |
| Alerts: |
|
Comments (none posted)
mnogosearch: Remote buffer overflow vulnerabilities
| Package(s): | mnogosearch |
CVE #(s): | CAN-2003-0436
CVE-2002-0789
|
| Created: | July 28, 2003 |
Updated: | July 30, 2003 |
| Description: |
Buffer overflow in the "ul" variable
(CAN-2003-0436) pokleyzz <pokleyzz -at- scan-associates.net> reported a
buffer overflow vulnerability in mnoGoSearch which can be exploited
remotely to execute arbitrary commands with the privileges of the
webserver.
Buffer overflow in the query variable ("q")
(CVE-2002-0789)
qitest1 <qitest1 -at- bespin.org> reported a buffer overflow
vulnerability in the query variable ("q") which can be exploited remotely
to execute arbitrary commands with the privileges of the webserver. |
| Alerts: |
|
Comments (none posted)
perl: cross site scripting vulnerability in CGI.pm module
| Package(s): | perl |
CVE #(s): | CAN-2003-0615
|
| Created: | July 29, 2003 |
Updated: | October 1, 2003 |
| Description: |
obscure@eyeonsecurity.org reported a
cross site scripting vulnerability in the CGI.pm perl module. This module
is used to facilitate the creation of web forms and is part of the
perl-modules RPM package.
CAN-2003-0615 |
| Alerts: |
|
Comments (none posted)
stunnel: signal handler reentrancy DoS
| Package(s): | stunnel |
CVE #(s): | CAN-2002-1563
|
| Created: | July 25, 2003 |
Updated: | November 25, 2003 |
| Description: |
Stunnel is a wrapper for network connections. It can be used to tunnel an
unencrypted network connection over a secure connection (encrypted using
SSL or TLS) or to provide a secure means of connecting to services that do
not natively support encryption.
When configured to listen for incoming connections (instead of being
invoked by xinetd), stunnel can be configured to either start a thread or a
child process to handle each new connection. If Stunnel is configured to
start a new child process to handle each connection, it will receive a
SIGCHLD signal when that child exits.
Stunnel versions prior to 4.04 would perform tasks in the SIGCHLD signal
handler which, if interrupted by another SIGCHLD signal, could be unsafe.
This could lead to a denial of service. |
| Alerts: |
|
Comments (none posted)
sup: insecure temporary file
| Package(s): | sup |
CVE #(s): | CAN-2003-0606
|
| Created: | July 29, 2003 |
Updated: | October 1, 2003 |
| Description: |
sup, a package used to maintain collections of files in identical
versions across machines, fails to take appropriate security
precautions when creating temporary files. A local attacker could
exploit this vulnerability to overwrite arbitrary files with the
privileges of the user running sup.
CAN-2003-0606 |
| Alerts: |
|
Comments (none posted)
Updated vulnerabilities
2.4 kernel - several vulnerabilities
| Package(s): | 2.4 kernel |
CVE #(s): | CAN-2003-0461
CAN-2003-0462
CAN-2003-0464
CAN-2003-0476
CAN-2003-0501
CAN-2003-0550
CAN-2003-0551
CAN-2003-0552
|
| Created: | July 21, 2003 |
Updated: | December 24, 2003 |
| Description: |
Several security issues have been discovered affecting the Linux kernel:
-
CAN-2003-0461: /proc/tty/driver/serial reveals the exact character
counts for serial links. This could be used by a local attacker to infer
password lengths and inter-keystroke timings during password entry.
-
CAN-2003-0462: Paul Starzetz discovered a file read race condition
existing in the execve() system call, which could cause a local crash.
-
CAN-2003-0464: A recent change in the RPC code set the reuse flag on
newly-created sockets. Olaf Kirch noticed that his could allow normal
users to bind to UDP ports used for services such as nfsd.
-
CAN-2003-0476: The execve system call in Linux 2.4.x records the file
descriptor of the executable process in the file table of the calling
process, allowing local users to gain read access to restricted file
descriptors.
-
CAN-2003-0501: The /proc filesystem in Linux allows local users to
obtain sensitive information by opening various entries in /proc/self
before executing a setuid program. This causes the program to fail to
change the ownership and permissions of already opened entries.
-
CAN-2003-0550: The STP protocol is known to have no security, which
could allow attackers to alter the bridge topology. STP is now turned
off by default.
-
CAN-2003-0551: STP input processing was lax in its length checking,
which could lead to a denial of service.
-
CAN-2003-0552: Jerry Kreuscher discovered that the Forwarding table
could be spoofed by sending forged packets with bogus source addresses
the same as the local host.
|
| Alerts: |
|
Comments (none posted)
apache: multiple vulnerabilities in Apache HTTP server
| Package(s): | apache |
CVE #(s): | CAN-2003-0192
CAN-2003-0253
CAN-2003-0254
|
| Created: | July 11, 2003 |
Updated: | September 22, 2003 |
| Description: |
The Apache Software Foundation and
the Apache HTTP Server Project have announced
the release of the Apache HTTP Server 2.0.47. This release fixes four
security vulnerabilities:
- Certain sequences of per-directory renegotiations and the
SSLCipherSuite directive being used to upgrade from a weak ciphersuite to
a strong one could result in the weak ciphersuite being used in place of
the strong one. [CAN-2003-0192]
- Certain errors returned by accept() on rarely accessed ports could
cause temporal denial of service, due to a bug in the prefork MPM. [CAN-2003-0253]
- Denial of service was caused when target host is IPv6 but ftp proxy
server can't create IPv6 socket. [CAN-2003-0254]
- The server would crash when going into an infinite loop due to too
many subsequent internal redirects and nested subrequests. [VU#379828]
|
| Alerts: |
|
Comments (none posted)
bind buffer overflow vulnerability in DNS resolver libraries
| Package(s): | bind glibc |
CVE #(s): | CAN-2002-0651
CAN-2002-0684
|
| Created: | July 8, 2002 |
Updated: | October 1, 2003 |
| Description: |
The BIND 4.9.8-OW2 patch and BIND 4.9.9 release (and thus 4.9.9-OW1)
include fixes for a libc related vulnerability which does not
affect Linux. Updates from
the Internet Software Consortium (ISC)
are available from here.
No release or branch of Openwall GNU/*/Linux (Owl) is known to be
affected, due to Olaf Kirch's fixes for this problem getting into the
GNU C library more than two years ago.
Unfortunatly that does not mean that Linux systems are not vulnerable.
Similar code, without Olaf Firch's fixes,
is in the glibc getnetbyXXX functions.
These functions are described in the SuSE alert as
"
used by very few applications only, such as ifconfig and ifuser,
which makes exploits less likely."
CERT Advisory: CA-2002-19
Buffer Overflow in Multiple DNS Resolver Libraries
CAN-2002-0651
CAN-2002-0684 |
| Alerts: |
|
Comments (1 posted)
Canna server: exploitable buffer overrun
| Package(s): | canna |
CVE #(s): | CAN-2002-1158
CAN-2002-1159
|
| Created: | December 10, 2002 |
Updated: | October 1, 2003 |
| Description: |
Canna is a kana-kanji conversion server which is necessary for Japanese
language character input.
A buffer overflow bug in the Canna server up to and including version 3.5b2
allows a local user to gain the privileges of the user 'bin' which could
lead to further exploits. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2002-1158 to this issue.
A lack of validation of requests has been found that affects Canna version
3.6 and earlier. A malicious remote user could exploit this vulnerability
to leak information, or cause a denial of service attack. (CAN-2002-1159)
See also
http://canna.sourceforge.jp/sec/Canna-2002-01.txt
CAN-2002-1158
CAN-2002-1159 |
| Alerts: |
|
Comments (none posted)
CUPS: vulnerability in the CUPS IPP implementation
| Package(s): | cups |
CVE #(s): | CAN-2003-0195
|
| Created: | May 27, 2003 |
Updated: | July 22, 2003 |
| Description: |
Phil D'Amore of Red Hat discovered a vulnerability in the CUPS IPP
(Internet Printing Protocol) implementation. The IPP implementation is
single-threaded, which means only one request can be serviced at a time.
An attacker could make a partial request that does not time out and
therefore creates a denial of service. In order to exploit this bug, an
attacker must have the ability to make a TCP connection to the IPP port (by
default 631). |
| Alerts: |
|
Comments (none posted)
ethereal: security problems in Ethereal 0.9.12
| Package(s): | ethereal |
CVE #(s): | CAN-2003-0428
CAN-2003-0429
CAN-2003-0431
CAN-2003-0432
|
| Created: | June 23, 2003 |
Updated: | November 10, 2003 |
| Description: |
Several security problems have been found in Ethereal
0.9.12. "It may be possible to make Ethereal crash or run
arbitrary code by injecting a purposefully malformed packet onto the wire,
or by convincing someone to read a malformed packet trace file." |
| Alerts: |
|
Comments (none posted)
Filename disclosure vulnerability in fam
| Package(s): | fam |
CVE #(s): | CAN-2002-0875
|
| Created: | August 19, 2002 |
Updated: | January 5, 2005 |
| Description: |
"fam" (file alteration monitor) watches files and directories for changes and lets interested applications know when something happens. This package has a flaw in its group handling that blocks some legitimate operations while, at the same time, exposing the names of files that should otherwise be invisible. |
| Alerts: |
|
Comments (none posted)
fdclone: insecure temporary directory
| Package(s): | fdclone |
CVE #(s): | CAN-2003-0596
|
| Created: | July 23, 2003 |
Updated: | October 1, 2003 |
| Description: |
fdclone creates a temporary directory in /tmp as a workspace.
However, if this directory already exists, the existing directory is
used instead, regardless of its ownership or permissions. This would
allow an attacker to gain access to fdclone's temporary files and
their contents, or replace them with other files under the attacker's
control.
CAN-2003-0596 |
| Alerts: |
|
Comments (none posted)
fetchmail: buffer overflow
| Package(s): | fetchmail |
CVE #(s): | CAN-2002-1365
|
| Created: | December 17, 2002 |
Updated: | October 20, 2003 |
| Description: |
Versions of fetchmail prior to 6.2.0 have (yet another) buffer overflow vulnerability which can be exploited remotely via a suitably crafted message. See this advisory for details. |
| Alerts: |
|
Comments (3 posted)
glibc: DNS stub resolvers contain buffer overflow vulnerability
| Package(s): | glibc |
CVE #(s): | CAN-2002-1146
|
| Created: | November 7, 2002 |
Updated: | February 5, 2004 |
| Description: |
DNS stub resolvers from multiple vendors contain a buffer overflow
vulnerability. The impact of this vulnerability appears to be limited to
denial of service. (See CERT Vulnerability Note
VU#738331)
The BIND 4 and BIND 8.2.x stub resolver libraries, and other libraries such
as glibc 2.2.5 and earlier, libc, and libresolv, uses the maximum buffer
size instead of the actual size when processing a DNS response, which
causes the stub resolvers to read past the actual boundary ("read buffer
overflow"), allowing remote attackers to cause a denial of service
(crash).
|
| Alerts: |
|
Comments (none posted)
gnupg: key validation
| Package(s): | gnupg |
CVE #(s): | CAN-2003-0255
|
| Created: | May 16, 2003 |
Updated: | November 18, 2003 |
| Description: |
A key validation bug was discovered in the GNU Privacy Guard (GPG) which
would cause keys with more then one user ID to trust all user ID's with the
amount of trust given to the most-valid user ID. |
| Alerts: |
|
Comments (none posted)
gnupg: gpg setgid
| Package(s): | gnupg |
CVE #(s): | |
| Created: | July 21, 2003 |
Updated: | July 23, 2003 |
| Description: |
gpg needs to be setuid to make use of protected memory space, however the
setgid bit allowed the gpg user to overwrite files owned by the group
root. |
| Alerts: |
|
Comments (none posted)
gtkhtml: malformed messages cause crash
| Package(s): | gtkhtml |
CVE #(s): | CAN-2003-0133
CAN-2003-0541
|
| Created: | April 14, 2003 |
Updated: | April 18, 2005 |
| Description: |
GtkHTML is the HTML rendering widget used by the Evolution mail reader.
GtkHTML supplied with versions of Evolution prior to 1.2.4 contain a bug
when handling HTML messages. Alan Cox discovered that certain malformed
messages could cause the Evolution mail component to crash. |
| Alerts: |
|
Comments (none posted)
kernel 2.4 - two new vulnerabilities
| Package(s): | kernel |
CVE #(s): | CAN-2003-0244
CAN-2003-0246
|
| Created: | May 14, 2003 |
Updated: | July 25, 2003 |
| Description: |
The 2.4.20 (and prior) kernel contains a couple of vulnerabilities that are worth fixing.
- The ioperm() system call doesn't perform proper checking,
allowing a local user to manipulate arbitrary I/O ports.
- The networking code contains a remotely exploitable denial of
service condition; see the May 24 Security Page for details.
|
| Alerts: |
|
Comments (2 posted)
kernel-utils: setuid vulnerability
| Package(s): | kernel-utils |
CVE #(s): | CAN-2003-0019
|
| Created: | February 7, 2003 |
Updated: | January 21, 2005 |
| Description: |
The kernel-utils package contains several utilities that can be used to
control the kernel or machine hardware. In Red Hat Linux 8.0 this package
contains user mode linux (UML) utilities.
The uml_net utility in kernel-utils packages with Red Hat Linux 8.0 was
incorrectly shipped setuid root. This could allow local users to control
certain network interfaces, add and remove arp entries and routes, and put
interfaces in and out of promiscuous mode.
All users of the kernel-utils package should update to these packages that
contain a version of uml_net that is not setuid root.
Alternatively, as a work-around to this vulnerability issue the following
command as root:
chmod -s /usr/bin/uml_net |
| Alerts: |
|
Comments (none posted)
libpng, libpng3: buffer overflow
| Package(s): | libpng, libpng3 |
CVE #(s): | CAN-2002-1363
|
| Created: | December 19, 2002 |
Updated: | July 14, 2004 |
| Description: |
Glenn Randers-Pehrson discovered a problem in connection with 16-bit
samples from libpng, an interface for reading and writing PNG
(Portable Network Graphics) format files. The starting offsets for
the loops are calculated incorrectly which causes a buffer overrun
beyond the beginning of the row buffer. |
| Alerts: |
|
Comments (none posted)
lynx: CRLF injection vulnerability
| Package(s): | lynx |
CVE #(s): | CAN-2002-1405
|
| Created: | November 19, 2002 |
Updated: | October 1, 2003 |
| Description: |
If lynx is given a url with some special characters on the command line, it
will include faked headers in the HTTP query. This feature can be used to
force scripts (that use Lynx for downloading files) to access the wrong
site on a web server with multiple virtual hosts.
CAN-2002-1405 |
| Alerts: |
|
Comments (none posted)
perl-MailTools: remote command execution
| Package(s): | MailTools |
CVE #(s): | CAN-2002-1271
|
| Created: | November 5, 2002 |
Updated: | September 19, 2003 |
| Description: |
The SuSE Security Team reviewed critical Perl modules, including the
Mail::Mailer package. This package contains a security hole which allows
remote attackers to execute arbitrary commands in certain circumstances.
This is due to the usage of mailx as default mailer which allows commands
to be embedded in the mail body.
Note that mail processing programs which use this package can be affected by this vulnerability; in particular, SpamAssassin is vulnerable if you use the -r or -w flags.
|
| Alerts: |
|
Comments (none posted)
mikmod: buffer overflow
| Package(s): | mikmod |
CVE #(s): | CAN-2003-0427
|
| Created: | June 16, 2003 |
Updated: | June 16, 2005 |
| Description: |
Ingo Saitz discovered a bug in mikmod whereby a long filename inside
an archive file can overflow a buffer when the archive is being read
by mikmod. |
| Alerts: |
|
Comments (none posted)
mpg123 - buffer overflow
| Package(s): | mpg123 |
CVE #(s): | CAN-2003-0577
|
| Created: | July 16, 2003 |
Updated: | September 30, 2003 |
| Description: |
The mpg123 utility contains a buffer overflow vulnerability which can allow an attacker to execute arbitrary code by way of a malicious MP3 file. |
| Alerts: |
|
Comments (none posted)
Nessus NASL scripting engine security issues
| Package(s): | nessus |
CVE #(s): | |
| Created: | May 27, 2003 |
Updated: | August 12, 2004 |
| Description: |
Some some vulnerabilities exsist in the Nessus NASL scripting engine. To
exploit these flaws, an attacker would need to have a valid Nessus account
as well as the ability to upload arbitrary Nessus plugins in the Nessus
server (this option is disabled by default) or he/she would need to trick a
user somehow into running a specially crafted nasl script. Read the full
advisory for additional information. |
| Alerts: |
|
Comments (none posted)
net-snmp: denial of service vulnerability
| Package(s): | net-snmp |
CVE #(s): | CAN-2002-1170
|
| Created: | December 17, 2002 |
Updated: | November 7, 2003 |
| Description: |
The SNMP daemon included in the Net-SNMP package versions 5.0.1 through
5.0.4 can be caused to crash if it is sent a specially crafted packet. |
| Alerts: |
|
Comments (none posted)
nfs-utils xlog() off-by-one bug
| Package(s): | nfs-utils |
CVE #(s): | CAN-2003-0252
|
| Created: | July 14, 2003 |
Updated: | March 8, 2004 |
| Description: |
Linux NFS utils package contains remotely exploitable off-by-one bug.
A local or remote attacker could exploit this vulnerability by sending
specially crafted request to rpc.mountd daemon. See this BugTraq post for more details. |
| Alerts: |
|
Comments (none posted)
openssh: timing attack leads to information disclosure
| Package(s): | openssh |
CVE #(s): | CAN-2003-0190
|
| Created: | May 2, 2003 |
Updated: | November 30, 2004 |
| Description: |
From the advisory:
"During a pen-test we stumbled across a nasty bug in OpenSSH-portable
with PAM support enabled (via the --with-pam configure script switch). This
bug allows a remote attacker to identify valid users on vulnerable systems,
through a simple timing attack. The vulnerability is easy to exploit and
may have high severity, if combined with poor password policies and other
security problems that allow local privilege escalation." |
| Alerts: |
|
Comments (1 posted)
PHP: vulnerability in mail function
| Package(s): | php |
CVE #(s): | CAN-2002-0985
CAN-2002-0986
|
| Created: | November 13, 2002 |
Updated: | October 1, 2003 |
| Description: |
Two vulnerabilities exists in the mail() PHP function. The first one allows
the execution of any program/script bypassing safe_mode restriction, the
second one may give an open-relay script if the mail() function is not
carefully used in PHP scripts. See this Bugtraq
report for more details. Note that this is a different vulnerability than the previous PHP mail() problem, which affected versions through 4.1.0.
CAN-2002-0985
CAN-2002-0986 |
| Alerts: |
|
Comments (none posted)
PHP: Cross site scripting vulnerability
| Package(s): | PHP |
CVE #(s): | CAN-2003-0442
|
| Created: | July 2, 2003 |
Updated: | August 13, 2003 |
| Description: |
In PHP version 4.3.1 and earlier, when transparent session ID support is
enabled using the "session.use_trans_sid" option, the session ID is not
escaped before use. This allows a Cross Site Scripting attack. |
| Alerts: |
|
Comments (none posted)
phpgroupware - cross-site scripting and other exploits
| Package(s): | phpgroupware |
CVE #(s): | CAN-2003-0504
CAN-2003-0582
|
| Created: | July 16, 2003 |
Updated: | October 1, 2003 |
| Description: |
Several vulnerabilities were discovered in all versions of phpgroupware
prior to 0.9.14.006. This latest version fixes an exploitable condition in
all versions that can be exploited remotely without authentication and can
lead to arbitrary code execution on the web server. This vulnerability is
being actively exploited.
Version 0.9.14.005 fixed several other vulnerabilities including cross-site
scripting issues that can be exploited to obtain sensitive information such
as authentication cookies.
See this
Security Corportation report for more information.
CAN-2003-0504
CAN-2003-0582 |
| Alerts: |
|
Comments (none posted)
PostgreSQL - more buffer overflows
| Package(s): | postgresql |
CVE #(s): | |
| Created: | February 12, 2003 |
Updated: | November 7, 2003 |
| Description: |
A new set of buffer overflows has been discovered in PostgreSQL 7.2.2; they affect the circle_poly(), path_encode(), and path_addr() functions. Exploiting these overflows requires that the attacker first obtain a connection to the PostgreSQL server. |
| Alerts: |
|
Comments (1 posted)
Local arbitrary code execution vulnerability in Python
| Package(s): | python |
CVE #(s): | CAN-2002-1119
|
| Created: | August 28, 2002 |
Updated: | October 1, 2003 |
| Description: |
Zack Weinberg discovered that
os._execvpe from os.py uses a predictable name which could lead
to execution of arbitrary code. According to the Debian
advisory, the problem
was present in Python versions 1.5, 2.1 and 2.2.
CAN-2002-1119 |
| Alerts: |
|
Comments (none posted)
Multiple-use vulnerability in Safe.pm
| Package(s): | Safe.pm |
CVE #(s): | CAN-2002-1323
|
| Created: | October 9, 2002 |
Updated: | February 20, 2004 |
| Description: |
usePerl has a
description of a vulnerability in the Safe.pm Perl module. It seems
that if a Safe compartment is used more than once, it ceases to be safe.
The problem is fixed in Safe 2.08. |
| Alerts: |
|
Comments (none posted)
semi: insecure temporary file
| Package(s): | semi, wemi |
CVE #(s): | CAN-2003-0440
|
| Created: | July 7, 2003 |
Updated: | October 1, 2003 |
| Description: |
semi, a MIME library for GNU Emacs, does not take appropriate
security precautions when creating temporary files. This bug could
potentially be exploited to overwrite arbitrary files with the
privileges of the user running Emacs and semi, potentially with
contents supplied by the attacker.
wemi is a fork of semi, and contains the same bug.
CAN-2003-0440 |
| Alerts: |
|
Comments (none posted)
File overwrite vulnerability in tar and unzip
| Package(s): | tar unzip |
CVE #(s): | CAN-2001-1267
CAN-2001-1268
CAN-2001-1269
CAN-2002-0399
|
| Created: | October 1, 2002 |
Updated: | April 10, 2006 |
| Description: |
The tar utility does not properly filter file names containing
"../", meaning that a hostile archive can, if unpacked by an
unsuspecting user, overwrite any file that is writable by that user. GNU
tar versions 1.13.19 and earlier are vulnerable; unzip through version 5.42
has the same vulnerability. |
| Alerts: |
|
Comments (1 posted)
teapop: SQL injection
| Package(s): | teapop |
CVE #(s): | CAN-2003-0515
|
| Created: | July 9, 2003 |
Updated: | October 1, 2003 |
| Description: |
teapop, a POP-3 server, includes modules for authenticating users
against a PostgreSQL or MySQL database. These modules do not properly
escape user-supplied strings before using them in SQL queries. This
vulnerability could be exploited to execute arbitrary SQL under the
privileges of the database user as which teapop has authenticated.
CAN-2003-0515 |
| Alerts: |
|
Comments (none posted)
Multiple vendor telnetd vulnerability
| Package(s): | telnet Telnet netkit-telnet-ssl kerberos telnetd netkit-telnet nkitb/nkitserv/telnetd krb5 |
CVE #(s): | |
| Created: | May 21, 2002 |
Updated: | October 5, 2004 |
| Description: |
This vulnerability,
originally thought to be confined to BSD-derived systems, was first covered
in the July 26th Security
Summary. It is now known that Linux telnet daemons are vulnerable as
well.
|
| Alerts: |
|
Comments (none posted)
unzip: directory traversal vulnerability
| Package(s): | unzip |
CVE #(s): | CAN-2003-0282
|
| Created: | July 1, 2003 |
Updated: | November 13, 2003 |
| Description: |
A vulnerabilitiy in unzip version 5.50 and earlier allows attackers to
overwrite arbitrary files during archive extraction by placing invalid
(non-printable) characters between two "." characters. These non-printable
characters are filtered, resulting in a ".." sequence. See the full
advisory for further information. |
| Alerts: |
|
Comments (none posted)
vim - modeline vulnerability
| Package(s): | vim |
CVE #(s): | CAN-2002-1377
|
| Created: | January 16, 2003 |
Updated: | February 10, 2004 |
| Description: |
VIM allows a user to set the modeline differently for each edited text file
by placing special comments in the files. Georgi Guninski found that these
comments can be carefully crafted in order to call external programs. This
could allow an attacker to create a text file such that when it is opened
arbitrary commands are executed. |
| Alerts: |
|
Comments (4 posted)
vixie-cron: Local vulnerability
| Package(s): | vixie-cron |
CVE #(s): | CVE-2001-0559
|
| Created: | April 17, 2003 |
Updated: | October 3, 2003 |
| Description: |
From the ISS
advisory:
"Vixie Cron is a scheduling daemon that ships with several Linux
distributions. Vixie Cron version 3.0pl1 could allow a local attacker to
gain root privileges. Crontab fails to properly drop privileges in certain
cases after a crontab modification operation. A local attacker could
exploit this vulnerability to gain root privileges on the system since
crontab is installed setuid root."
Note: this vulnerability is dated May 07 2001, and was first mentioned in
LWN on the May 10,
2001 security page. |
| Alerts: |
|
Comments (none posted)
webmin: session ID spoofing
| Package(s): | webmin |
CVE #(s): | CAN-2003-0101
|
| Created: | June 13, 2003 |
Updated: | November 18, 2003 |
| Description: |
miniserv.pl in the webmin package does not properly handle
metacharacters, such as line feeds and carriage returns, in
Base64-encoded strings used in Basic authentication. This
vulnerability allows remote attackers to spoof a session ID, and
thereby gain root privileges. |
| Alerts: |
|
Comments (none posted)
wget:directory traversal bug
| Package(s): | wget |
CVE #(s): | CAN-2002-1344
|
| Created: | December 10, 2002 |
Updated: | October 1, 2003 |
| Description: |
Versions of wget prior to 1.8.2-4 contain a bug that permits a malicious
FTP server to create or overwrite files anywhere on the local file system.
FTP clients must check to see if an FTP server's response to the NLST
command includes any directory information along with the list of filenames
required by the FTP protocol (RFC 959, section 4.1.3).
If the FTP client fails to do so, a malicious FTP server can send filenames
beginning with '/' or containing '/../' which can be used to direct a
vulnerable FTP client to write files (such as .forward, .rhosts, .shosts,
etc.) that can then be used for later attacks against the client machine.
See also
this Bugtraq article from 1997.
CAN-2002-1344 |
| Alerts: |
|
Comments (none posted)
Wwwoffle remote privilege escalation vulnerability
| Package(s): | wwwoffle |
CVE #(s): | CAN-2002-0818
|
| Created: | August 14, 2002 |
Updated: | October 1, 2003 |
| Description: |
The wwwoffle web proxy incorrectly processes HTTP PUT and POST requests
with negative Content Length values.
"It is believed
that an attacker could exploit this bug to gain remote wwwrun access
to the system wwwoffled is running on."
CAN-2002-0818 |
| Alerts: |
|
Comments (none posted)
xinetd: Memory leak in xinetd 2.3.10
| Package(s): | xinetd |
CVE #(s): | CAN-2003-0211
|
| Created: | May 13, 2003 |
Updated: | November 13, 2003 |
| Description: |
Xinetd is a 'master server' that is used to to accept service connection
requests and start the appropriate servers.
Because of a programming error, memory was allocated and never freed if a
connection was refused for any reason. An attacker could exploit this flaw
to crash the xinetd server, rendering all services it controls unavailable.
In addition, other flaws in xinetd could cause incorrect operation in
certain unusual server configurations.
All users of xinetd are advised to update to xinetd-2.3.11 which is not
vulnerable to these issues. |
| Alerts: |
|
Comments (none posted)
Xpdf - command execution vulnerability
| Package(s): | Xpdf |
CVE #(s): | CAN-2003-0434
|
| Created: | June 18, 2003 |
Updated: | July 24, 2003 |
| Description: |
Xpdf suffers from the same sort of "execute arbitrary code embedded in a malicious document" vulnerability that is so widespread in other PostScript and PDF interpreters. |
| Alerts: |
|
Comments (none posted)
Resources
The
July
28 O'Reilly Security Alerts column is available; it looks at the latest
apache and kernel problems, along with several others.
The latest Linux Advisory Watch and Linux Security Week newletters from
LinuxSecurity.com are also available.
Comments (none posted)
Events
The 2004 Financial Cryptography conference will be held February 9
to 12 in Key West, Florida. The call for papers has gone out, with
submissions due by September 1.
Full Story (comments: none)
Page editor: Jonathan Corbet
Kernel development
Brief items
The current development kernel is 2.6.0-test2, which was
released by Linus on July 27.
It contains a lot of fixes, of course, including a bunch of forward-ported
2.4 patches, numerous architecture updates, some IDE fixes, an option to
remove I/O schedulers from the kernel entirely, and a new
local_t
type for CPU-local data. See
the long-format
changelog for the details.
As of this writing, there are no patches beyond -test2 in Linus's
BitKeeper repository.
The current stable kernel is 2.4.21. Marcelo has been busy with the
prepatches, however; 2.4.22-pre8 was
released on July 24, and 2.4.22-pre9 on
July 29. Both patches limit themselves to fixes.
Comments (none posted)
Kernel development news
While the performance improvements in the 2.6 kernel have impressed and
pleased many users, there has been a constant level of complaining about
the scheduler. In particular, many users are unhappy with the interactive
feel of the 2.6 kernel; reports of jerky response and skipping audio are
common. Some have gone as far as to compare the 2.6-test scheduler with
the 2.4 virtual memory subsystem at the same point in the development
cycle. There is some concern that scheduling could be one of the (few)
embarrassments in the upcoming 2.6.0 release. Those worries are probably
overdone, but the point is that 2.6.0-test scheduling still needs some
work.
The good news is that said work is being done. Con Kolivas has been
posting a set of interactivity patches for about a month now. Those
wanting to try them out can find them in a recent -mm kernel;
patches against the Linus kernels can be found on Con's web
site. His most recent patch is 011int.
Con's work follows a familiar theme: improve interactive performance by
giving a priority boost to interactive processes. All you have to do is
figure out which processes are the interactive ones. Of course, that is
rather easier said than done. Con's interactivity patches have been
through several iterations in an attempt to find the best way to identify
interactive processes and the proper amount of bonus to give them. This
patch series may be converging on a result; several testers have reported
good results.
The core idea (already part of the 2.6.0-test scheduler) is that an
interactive process is one which sleeps much of
the time. With Con's patches, any process which sleeps for at least
one clock tick gets a priority bonus when it wakes up; processes which have
done enough sleeping recently to be explicitly marked as "interactive" get
a bigger bonus than others. Processes
which run without sleeping for their entire time slice lose a point. In
this way, CPU-hog processes sink to the lowest priorities, while a process
reading from a terminal (or an audio stream) will get quick access to the
processor. Additionally, processes which have maxed out their sleep bonus
and are seen as truly interactive can hang out in the run queue for a while
even after their time slice expires.
Life is not always so simple, however. Early versions of this patch tended
to make life hard for newborn processes; it took them quite a while to
build up enough of an interactivity bonus to be able to respond quickly on
a loaded system. So things had to be tweaked to let new processes find
their natural level quickly. There is also the issue of processes that
sleep for a long time, then wake up to do some serious cranking. So
processes that sleep for longer than one second lose their interactivity
bonus, and end up at an "idle" level just below the interactive level.
Work has also been required to balance priorities properly when an
interactive process forks.
More recently, Ingo Molnar has also started looking at the interactivity
problem; his sched-2.6.0-test1-G6 patch
takes a different approach. Ingo starts by changing the scheduler to use
nanosecond resolution in its timekeeping; his claim is that, by working
with high-resolution time, audio skipping problems can be fixed. Then, the
patch splits up time slices so that processes running at the same priority
switch off with each other much more often, ensuring that none of them have
to wait too long before getting some processor time. Finally, Ingo's patch
extends the sleep bonus to include time that the process sits in the run
queue, but does not actually get into the processor.
The two sets of patches are mostly orthogonal to each other; while it
remains hard to apply both Con's and Ingo's patches to a single system, the
two really are addressing different issues. Recent versions of Con's
patches, however, also include some of Ingo's work (almost everything
except the nanosecond resolution). In the end, code from both patches is
likely to find its way into the kernel.
As a postscript, it's worth taking a look at this post from Daniel Phillips, where he states
that the wrong approach is being taken for the audio skipping problem.
Audio playback, says Daniel, is not an interactive task - it is a realtime
task. What is really needed for the audio case is a bounded-latency soft
realtime scheduler, not an endless series of interactive scheduler tweaks.
Comments (8 posted)
The topic of module unload races - where the kernel can end up calling into
a module which has been removed - comes back occasionally. Much work has
been done in 2.5 to reduce and eliminate these races. Part of that effort was
moving module reference counting outside of the modules themselves. The
result was a safer scheme, but one which imposes new requirements on kernel
code which calls into modules. In some kernel subsystems (networking), the
maintainers have decided that there is no need to worry about reference
counting for modules; they simply ignore it.
Enter Rusty Russell. Since the reference counts are seen to be a pain, and
some code isn't using them at all, why not simply get rid of them? He has
submitted a patch which does exactly that.
Of course, the issue of how to safely remove modules remains. Without
reference counts, how does the kernel know when it can actually get rid of
a particular module? With Rusty's patch, a different approach is taken:
modules are never actually removed. If an administrator invokes
rmmod, the module's cleanup function will be called and all kernel
knowledge of the module will go away - but the module code itself will
remain in the kernel. The patch thus sacrifices some system memory on
every unload as a way of avoiding unload races.
Some developers liked this patch, others didn't. For a kernel hacker who
is debugging a module, a little lost memory for each load/unload cycle is
probably not a big problem; the system will likely be rebooted soon
anyway. The patch does present a bigger problem for Linux installers,
however; many of these do hardware detection by loading almost every module
available and seeing which ones actually find something. On a "small"
system (that is, say, 64MB), it is possible that some distribution
installers would simply run out of memory and die.
Rusty proposed adding a special rmmod option which would clean up
memory left behind by deleted modules (while also marking the kernel
tainted). For now, however, all of this has been made irrelevant by Linus,
who decreed: "First off - we're not
changing fundamental module stuff any more." This statement drew an amused response from Rusty ("OK. Who
are you and what have you done with the real Linus?"), but the
general sigh of relief from most kernel hackers could be heard worldwide.
It seems that Linus is truly holding the line and keeping out potentially
disruptive changes this time around.
Comments (4 posted)
The final part of the 2.3 development series featured a strong campaign to
get the ReiserFS filesystem merged. That campaign was successful; ReiserFS
was added in 2.4.1. Now it appears that history may repeat itself with the
2.6 kernel. Hans Reiser has
posted a note
asking that the soon-to-be-posted Reiser4 patch be merged into 2.6.0-test.
Reiser4 is not an updated version of ReiserFS; it is an entirely new
filesystem. According to the posted
benchmarks, Reiser4 outperforms ReiserFS and ext3 on several fronts.
According to Hans, the performance of Reiser4 is now good enough to justify
including it in 2.6-test.
The truly interesting part of Reiser4 is not limited to performance,
however. Reiser4
is presented as a fully atomic filesystem - every operation either executes
fully or not at all. It thus offers the same sort of crash resistence
found in journaling filesystems, but with a couple of differences. One is
that, it is claimed, the "wandering log" technique used in Reiser4 offers
greater speed, since, unlike with other journaling schemes, it is not
necessary to write data twice. And the other is that the "fully atomic"
nature of the filesystem can extend beyond individual operations. Reiser4,
in other words, can provide actual transactions.
A typical journaling filesystem works by writing all of the blocks to be
changed in a given operation to a special journal file, followed by a
"commit record." Once the operation is committed, the blocks can be copied
from the journal to their real destination on the disk. If the system dies
before the commit record is written, the operation is simply discarded and
the filesystem is unchanged. If, instead, a fully committed operation is
found in the journal, it can be replayed. With a scheme like this, an
operation may be lost in a crash, but the filesystem itself will not be
corrupted.
The Reiser4 wandering log technique works a little differently. It does
not overwrite blocks in the filesystem; instead, blocks to be changed are
relocated and the data is written in the new spot. The block pointers in
the filesystem are changed in an (also relocated) directory block. This
process continues up the filesystem tree until, with a single write
pointing to the new root block, the whole operation is committed. The
elimination of the need to write data separately to a journal file can
increase performance, but this technique also has the potential to fragment
files across the disk, hurting read performance. For that reason, Reiser4
allows for plugin modules which can look at operations and opt for a more
normal journaling scheme when it makes sense. There will also be a
"repacker" program which will go through occasionally and rearrange disks
for better read performance.
The ability to perform multi-operation, multi-file transactions is what
will make Reiser4 truly unique, however. A transactional capability will
allow applications to perform complicated operations without the need to
resort to tricks with fsync() and file renaming, and without the
need to use a separate database manager. Of course, there are a few
residual issues, like the fact that the standard Unix system calls make no
provision for starting, committing, and rolling back transactions. So a
new system call interface will be required. The Reiser4 developers are
working on this interface, but have not yet posted it for wide review.
Linus has not committed himself with regard to merging Reiser4 into 2.6.
It's worth noting that, when ReiserFS was merged, it had been stable and
widely used for some time. That is not the case for Reiser4, which is still in
an early stage. Chances are that Reiser4 will have a harder time
getting into the kernel than ReiserFS did. (For more information on
Reiser4, see this document on
transactions, and this one on
wandering logs, dancing trees, and other journaling topics).
Comments (12 posted)
Patches and updates
Kernel trees
Core kernel code
Device drivers
Documentation
Filesystems and block I/O
Janitorial
Networking
Security-related
Benchmarks and bugs
Miscellaneous
Page editor: Jonathan Corbet
Distributions
News and Editorials
[This article was contributed by Ladislav Bodnar]
While Germany's Munich has been stealing the headlines with its effort to
convert the city's public administration infrastructure from Windows to
Linux, another European country has been even bolder and more successful in
adopting open source software for similar tasks. This country is Spain. Based
on its many success stories and the determined approach of several regional
governments, it won't be an exaggeration to claim that Spain -- of all
European countries -- is furthest along the road to Linux adoption and is
setting a notable precedent for other countries to follow.
Although Linux had always been popular with the geek segment of Spain's
computer users, its wide-spread adoption really got off the ground with the
announcement in April
2002 of the LinEx project. The LinEx
distribution, based on Debian GNU/Linux and with GNOME as its default desktop
environment, was created by the regional government of Extremadura in Western
Spain. Extremadura had set itself some clear goals:
create conditions for wide-spread adoption of information technology and
increase computer literacy among the citizens. Various ideas for achieving
those goals were followed by
clear plans -- until the realization that the cost of providing the hardware
in combination with inevitable software licenses would be unbearable.
Refusing to give up at the first hurdle, the Extremadura government turned to
open source software. It did not hesitate to employ engineers to create a
customized Linux distribution which would meet its exact needs. Although the
first releases of LinEx were not without problems, the subsequent ones have
seen dramatic improvements, especially in the area of hardware support. There
was no shortage of testers, as the government gave away the product CDs at
every opportunity - in government offices, magazines and even daily
newspapers. There was a determined campaign to get LinEx out to everybody.
Finally, the effort bore fruit and the Extremadura government announced last month that it had
successfully deployed 80,000 LinEx computers in schools, or one system per
two students, and it had also created 33 computer centers for use by the
general population.
Enthusiam for free software tends to be contagious, so few people
were taken by surprise when the neighboring province of Andalusia, the
largest in Spain and roughly the size of Minnesota or Austria, also began
flirting with Linux. It wasn't long before a firm policy was declared
in March of this year. It demanded, among other things, that all software
development carried out by "La Junta de Andalusia" or any official
educational entity be developed with free software. Additionally, all
hardware acquired by official educational centers was to be fully compatible
with Free Software operating systems, which was to come pre-installed on all
newly purchased computers. All official Internet access points were required
to be equipped with Free Software.
Next in the line of "infected" regions was Aragon, another large province in
the North East of the country. Earlier this month, its government introduced
intensive 40-hour Linux
courses in Zaragoza, the region's capital, while the local Linux
enthusiasts have launched the Zaralinux
portal and even their own distribution called Augustux. Augustux is a
Knoppix-based live CD with full support for the local language and its latest
version is freely available for download. It is worth noting that Richard
Stallman visited
Zaragoza earlier this month to take part in a conference on Free Software
movement and GNU/Linux.
Even if the remaining regional governments of Spain have yet to declare any
open source software initiatives, they are undoubtedly watching the progress
made by the pioneers in Extremadura and Andalusia with keen eyes. After all,
politics and finance play important roles in every society. If other regions
can save substantial amounts of money and provide their citizens with access
to technology at the same time, then opposition parties and taxpayers in
other provinces will have every reason to demand the same. This in turn will
create further opportunities for commercial companies in software
development, education and technical support.
And indications are that this is already happening. Spain has always had a
fair share of Linux distributions and while some of them are no longer
around, new ones are being established regularly. The oldest ones are HispaFuentes and ESware. Although HispaFuentes seems to have
withdrawn from developing their Red Hat-based distribution and is
concentrating instead on custom solutions, support and security, ESware
continues with active development of its Debian-based desktop and server
products called ESware365. The company also provides consultation and support
services as well as educational and certification programs. Several new Linux
companies have sprouted recently. Among them is BlueSock Linux Solutions, a company
creating a Debian-based distribution called BlueSock Linux (a first beta
release is now available for download) and Lambdaux (λux), a commercial company producing
yet another Debian and LinEx-based distribution. Both of them also offer a
range of Linux training and certification services.
Spain is a country which has embraced Linux and free software with open arms
for the benefit of both its population and its economy. Between the
government initiatives, volunteer efforts, commercial companies
and non-profit communities, the country has pioneered Linux adoption like no
other on this planet. Determination in overcoming difficulties, resistance
and FUD of those whose livelihood depends on the current status quo, together
with a clear plan of action has made Extremadura and LinEx an example to
follow. Many countries are a lot poorer than Spain, yet they still run their
public administration on expensive proprietary software and channel their
taxpayers' money out of the country. As Extremadura has shown us, it
doesn't need to be that way.
Comments (7 posted)
Distribution News
Mandrake Linux 9.2 Beta 1 has arrived to offer you the opportunity of an
entertaining summer of bug squashing. It's got lots of updated packages
and it's waiting to be
downloaded now.
Just be sure not to use it in production environments, and report those
bugs.
Full Story (comments: none)
Red Hat has announced a public beta release of Red Hat Enterprise
Linux 3. This release is available for several architectures, and
includes a heavily patched 2.4.21 kernel (Native Posix Threading, FUTEXes,
per-device block I/O locking, reverse-mapping VM, huge pages, the O(1)
scheduler, ACPI 2.0, 4G/4G memory split, asynchronous I/O, TUX, filesystem
ACLs, cryptographic API, IPSec, etc.) along with a very current set of
applications. See the announcement for details.
Full Story (comments: 2)
Xandros, Inc. has
released a 1.1 edition of
Xandros Desktop Deluxe. It's got the Mozilla communications suite 1.3.1
with spell checking and spam filtering; the OpenOffice.org office suite
1.0.3; the Evolution groupware client 1.2.4; Enhanced hardware detection;
plus printed documentation and 30 days of e-mail support.
Xandros has announced a giveaway
of Xandros Desktop Deluxe to attendees of the San Francisco LinuxWorld
convention.
Comments (2 posted)
The Debian Project had a
successful conference
in Oslo. According to Debian Project Leader, Martin Michelmayr,
Debcamp was particularly impressive. "
"This year's debconf and
especially the preceding debcamp were a great success. The idea of having
a debcamp in which people can work on various projects together was born
during last year's debconf and got realised this year. We have seen that
it is very effective when you can put people who normally work together via
the Internet into a single room. Many design and implementation issues
have been discussed and have successfully been resolved. We will try to
hold more debcamps in the future, possibly smaller ones in different
countries.""
The Debian Weekly News for July 29, 2003 is
out. This week's issue looks at the Open Group's new strategy; a review of
the CheckInstall tool; and much more.
The ZopeMembers site reports
that a Debian package for OpenFlow is available for download from the Icube
website.
Comments (none posted)
The Gentoo Weekly Newsletter for July 28, 2003 is out. This week looks at
radical changes to Perl module handling; the first Gentoo Bug Day on August
2; Gentoo Linux 1.4 for PowerPC now available for pre-order; and Indonesian
documentation team in need of translators.
Full Story (comments: none)
This week
Slackware Linux has
upgraded USB modules to 2.4.21, and packages such as gawk, dvd+rw-tools,
binutils, distcc, apache, mod_ssl, and nfs-utils. As usual the details can
be found in the
slackware-current changelog.
Comments (none posted)
New Distributions
SPB-Linux is a USB distribution
that boots from a memory stick. The current stable version is 2.0, but the
most recent version is 2.1 beta 1 which features kernel 2.4.21 with usb 2
support, X, mozilla and more. (Thanks to Fred Mobach)
Comments (none posted)
ScummLinux
creates a bootable Linux CD which includes ScummVM and your favorites Scumm
games, so you can play them anywhere. The initial version of ScummLinux is
0.1, released July 27,
2003.
Comments (none posted)
Minor distribution updates
Damn Small Linux has released
v0.4.1 with minor
feature enhancements. "
Changes: This release offers a choice of two
X servers, Xvesa and Xfbdev. Xfbdev uses the framebuffer provided by the
Linux framebuffer device, which can be a much better choice for older
laptops. Also new is the emelFM file manager." Version
0.4.2 is also out.
Comments (none posted)
Fli4l (Floppy ISDN/DSL) has released
development v2.1.3 with
major feature enhancements. "
Changes: You can now specify MX entrys
in the nameserver configuration. The packet filter config is much-improved,
and you can also switch to an alternate configuration scheme for enhanced
packet filter configuration. Portforwarding now works with whitelists and
you can forward a whole protocol (e.g., GRE). You can now do DSL with the
Fritz!DSL from AVM and use the in-kernel PPPoE to reduce your CPU load. It
is now also possible to install and boot on DiscOnChip and
USB-Memory-Sticks. Included in the ISDN package is the CAPI for ISDN cards
from AVM."
Comments (none posted)
Knoppix has released
v3.2-2003-07-26 with major
feature enhancements. "
Changes: Many software upgrades, new drivers,
and boot options."
Comments (none posted)
System-Down::Rescue has released
v1.035 with minor
feature enhancements. "
Changes: This release should be considered a
release candidate for 1.0. The uncompressed ISO image has been reduced in
size to only about 18 MByte, with a lot of free space on the CD-cards
available for upgrades. The scripts and the library directory have been
cleaned and the various file systems have been changed. Ext2 is now used
for the initrd image and cramfs is used for the images to allow them to be
mounted runtime, reducing RAM usage and improving general performance. Many
bugfixes were made to the net libraries, so ping and ftp now work."
Comments (none posted)
Page editor: Rebecca Sobol
Development
Following last week's release of
Python 2.3c2,
the final Python 2.3 release
has been announced.
Nineteen months in the making, Python 2.3 represents a commitment to stability and improved performance, with a minimum of new language features. Countless bugs and memory leaks have been fixed, many new and updated modules have been added, and the new type/class system introduced in Python 2.2 has been significantly improved. Python 2.3 can be up to 30% faster than Python 2.2.
Some of the highlights of this release include:
- A new version of the Python IDE, IDLE.
- A large collection of new and improved library modules.
- Lots of new and improved built-in functions.
- Deprecation of obsolete functions.
- New doctest extensions.
- Extended slice capabilities.
- A universal newline mode for reading files with different newline types.
- Source code encoding declarations.
- The ability to import from zip files.
- FutureWarnings for performing unsigned operations on integers.
- Improved list.sort() speed.
- Sped up multiplication of longs.
- A more efficient pickling protocol.
- Optional timeouts on all socket module operations.
- Tkinter GUI improvements.
- A new boolean type.
- Better support for comma-delimited files.
A.M. Kuchling has put together a detailed list of PEPs and
changes in his
What's New in Python 2.3 document.
For those who wish to give Python 2.3 a spin, the official
Python 2.3 home page
has source code and more documentation.
Comments (none posted)
System Applications
Audio Projects
Version 0.9.6 of the
Alsa sound driver
has been released. Change information is in the source code.
Comments (none posted)
Clusters and Grids
IBM's alphaWorks has published an updated
overview of xCAT, the Extreme Cluster Administration Toolkit.
"
xCAT (Extreme Cluster Administration Toolkit) is a tool kit that can be used for the deployment and administration of Linux clusters."
Comments (none posted)
Database Software
Version 3.0 final of Druid
has been released.
"
This is mainly
a bug fix release with only a few adds: a new PDF doc gen module and
localization of the XHTML doc gen module (see changes in the files section).
All the docs have been moved from HTML to PDF to be printed and have been
revised and improved. Druid is a tool that helps the dba/developer to handle
database tables."
Comments (none posted)
The PostgreSQL Weekly News for July 25, 2003 has been published.
"
Well we are still technically in feature freeze, with beta now planned
to start next week. Don't confuse feature freeze with no activity, far
from it actually. In fact, there are now plans to release a 7.3.4 before
beta testing begins. The need arises from a potentially serious
(although extremely low probability) bug in 7.3.3 when restarting the
server."
Full Story (comments: none)
Version 7.3.4 of the
PostgreSQL database is available.
"
The PostgreSQL Global Development Group has released PostgreSQL version 7.3.4. It is highly recommended that those running earlier version of the 7.3 branch upgrade at their earliest convenience."
Comments (none posted)
A new version of the SapDB database
is available. See the
release info
document for a full list of changes.
Comments (none posted)
Electronics
The
latest news
from the gEDA site includes new versions of the SAVANT VHDL analyzer,
and the Icarus Verilog electronic simulation language compiler.
Comments (none posted)
Mail Software
The first open-source release of MailManager
has been announced on Zope Members News.
"
MailManager is a multi user system where all mail is stored centrally in the
ZODB. This allows mail to be allocated between groups of users, provides
tools for prioritising and answering mail quickly, allows service levels to
be set and provides management reports on volumes of mail and user performance."
Comments (1 posted)
Dru Nelson
explains qmail spam filtering on O'Reilly.
"
This article is the second and final installment describing my efforts to defend my systems from spam. The
first article explains some necessary concepts and terminology. This article will dig more into the details of an actual implementation with my mail system."
Comments (none posted)
Networking Tools
Production version 5.0.11 of Etherboot
has been released.
"
Etherboot is Open Source code for creating boot ROMs
for network booting x86 platforms. It is also a coordination point for
information about free software related to network booting."
Comments (none posted)
Printing
A new version of PPR
has been released.
"
PPR is a print spooler especially
designed to work with PostScript printers and with Ghostscript. It supports
parallel ports, serial ports, SMB, TCP/IP, and AppleTalk."
Comments (none posted)
Web Site Development
Russell Dyer
writes about Apache virtual hosts on O'Reilly.
"
Web designers and systems administrators sometimes don't consider reconfiguring Apache to solve some of their web problems. Sometimes with the help of a few directives, web designing can be easier and server costs can be reduced. The VirtualHost directive is one of these helpful but often overlooked features. It can be used for running several domains on a single server with one or many static IP addresses. I can think of at least two scenarios in which this could be useful. One made web designing easier for me. The other cut my server costs significantly."
Comments (none posted)
A new version of GroupUserFolder, a Zope group-oriented component,
is available.
"
This new version adds a very nice feature : groups nesting.
GRUF Groups can now belong to other groups transparently.
Also, this version includes nice ZMI improvements: groups and users
displayed as a tree, a click-on-everything management interface, and minor
bugfixes."
Comments (none posted)
Version 0.9.1 of the Zope product Issue Dealer
has been released. Changes include a name change, bug fixes,
and more.
Comments (none posted)
Version 3.2.14 of
mnoGoSearch, a web site search
engine, is available. The development
history page lists
the changes, a number of bugs have been fixed.
Comments (none posted)
Version 0.8.4 of the Rilke CMS
has been released.
"
Rilke CMS provides easy content management for non-geeks. It
allows you to easily publish a weblog, update a public website, or
collaborate on a private Intranet site."
Comments (none posted)
Version 1.7 RC3 of Tiki
is available.
"
The rc3 replaces the rc2 and fixes the registration verification bug that is
blocking in rc2. Tiki is a powerful CMS/Groupware. Features: article, forum,
newsletter, blog, file/image gallery, wiki, drawing, tracker, directory,
poll/survey & quiz, FAQ, chat, banner, webmail, calendar, category, ACL, etc
in Single Sign-on or LDAP. (PHP/MySQL/Smarty)"
Comments (none posted)
Issue #9 of the Zope 3 Newsletter is out with the latest Zope 3 news.
Full Story (comments: none)
Zope Members has
announced
the availability of ZOPE 2.6.2 Beta 5.
"
Zope 2.6.2b5 represents a development step in the next Zope
release formed with a large number of community contributions."
Comments (none posted)
John Udell's Web Log features
some tips on using the Zope web application platform.
"
Although Zope's written in Python, you lose this immediacy because like any Web application server, Zope introduces a bunch of intermediate layers: templates, scripts, the browser. But I learned of a few ways to make exploring Zope a more interactive affair."
Comments (none posted)
Miscellaneous
Version 1.0.6b3 of Barbecue, a barcode generator,
has been released. The announcement says:
"
Fixes bugs with Code 39 implementation and barcode heights.
All b1 and b2 users should update to this release. Production users
should remain at 1.0.5 or earlier."
Comments (none posted)
Version 1.3 of Squashfs
is available.
"
Squashfs is a highly compressed read-only filestem for
Linux. Release 1.3 adds support for FIFOs and sockets. It also
has numerous optimisations and small bug fixes."
Comments (none posted)
Desktop Applications
Audio Applications
Version 1.0 rc4 of amSynth, the Analogue Modelling SYNTHesizer,
has been released. Changes include bug fixes and an improved
startup procedure.
Full Story (comments: none)
Rapid development continues on gmorgan, an organ synthesizer with
auto-accompaniment. Version 0.06 adds performance improvements,
bug fixes, and some new features.
Full Story (comments: none)
CAD
A new release of PythonCAD has been announced.
"
The ninth release concentrated on internal improvements to the code. The
storage and manipulation of optional values was heavily reworked. The
first batch of changes regarding storing various drawing entities was
finished, with the handling of colors having the largest number of changes.
Linetypes and drawing styles will be updated in a similar manner to colors
in future releases."
Full Story (comments: none)
Desktop Environments
KDE 3.1.3 has been
released.
The full list of changes can be found in
the
changelog, but it makes relatively dry reading - 3.1.3 is a maintenance
release. (Thanks to Volker Blum).
Comments (none posted)
The July 25, 2003 edition of the
KDE-CVS-Digest
has been published.
"
This week's CVS-Digest: Find out who is paid to hack KDE. A new application,
KLogo-Turtle, for teaching children.
KPrinter adds access to online printer database. Kontact adds a to-do list
plugin. A redesigned font installer. The beginning of KWallet. And many more
features and bugfixes."
Comments (none posted)
Financial Applications
KDE.News
covers the new
KSpread Development Roadmap that resulted from discussions at LinuxTag
2003, with a look at the upcoming KSpread 1.3.
Comments (none posted)
Graphics
GnomeDesktop.org has
the announcement for version 1.3.17 of the GIMP.
"
GIMP Lots of new features are being added while the GIMP developers are preparing for camp and GIMP is approaching feature freze."
Comments (none posted)
JFreeChart 0.9.10
is available.
"
The focus of this release is the support for multiple range axes (instead of the current limit of 2 range axes per chart). Some other minor enhancements and bug fixes are also included.
JFreeChart is a class library, written in Java, for generating charts. Utilising the Java2D APIs, it currently supports bar charts, pie charts, line charts, XY-plots and time series plots."
Comments (none posted)
SourceForge has
an announcement for version 1.5.0 of OpenRM Scene Graph,
a 2D/3D Scene Graph rendering engine.
"
New in OpenRM Scene Graph 1.5.0 is direct support for
distributed memory parallel rendering when combined with
Chromium (chromium.sourceforge.net)"
Comments (none posted)
GUI Packages
Version 1.1.4rc2 of FLTK, the Fast Light ToolKit,
has been released.
The development team is searching for bugs until August 12, 2003
at which point the 1.1.4 version will be released.
Comments (none posted)
KDE.News
covers
the release of Qt version 3.2.
"
User desktop improvements include a "completely
re-written, faster font rendering engine." Developer improvements include
new QSpashScreen and QToolBox objects."
See
the announcement from Trolltech for more information.
Comments (none posted)
FreshMeat
has reviewed
a number of X window system GUI toolkits.
"
This article is aimed at Unix developers who already have some experience with programming languages and want to start developing GUI applications (mainly for The X Window System, though portability is discussed). It may also come in handy if you have used a particular GUI toolkit for some time and want to know whether others might suit your needs better. The main focus is comparison and introduction, but it serves as a bit of tutorial, as well."
Comments (none posted)
Mail Clients
Version 0.12.0 of Columbia
has been released.
"
Columba is an email client
written in Java, featuring a user-friendly graphical interface with wizards
and internalionalization support."
Comments (none posted)
MozillaZine has
an announcement for version 0.1 of Mozlla Thunderbird, a standalone
mail and newsgroup client. The
release notes detail all of the changes in this version.
Comments (none posted)
Office Applications
Version 4.1.7 of HylaFAX, a Fax modem utility,
has been announced.
"
This is a corrective release that fixes the PageChop feature that we inadvertently broke in the 4.1.6 patch-level, and is otherwise identical to 4.1.6."
Comments (none posted)
Web Browsers
Version 0.0.2 of gcjwebplugin
is available.
"
gcjwebplugin is a plugin for Mozilla and other web browsers for the execution of Java applets. It uses the JVM provided by GCJ."
The project is still in the testing and proof of concept phase.
Comments (none posted)
According to MozillaZine, verion 0.6.1 of the Firebird browser
has been released.
"
mozilla.org has just released a minor upgrade to their Mozilla Firebird 0.6
milestone, to fix a few key issues regarding security and stability,
including the autocomplete crash."
Comments (none posted)
The Tuesday July 29th, 2003 Mozilla
Independent Status Reports are out.
"
The latest set of status reports includes updates from Download Sort,
Enigmail, Gnusto, mozdev, Java and BlackConnect."
Comments (none posted)
Word Processors
Issue #154 of the
AbiWord Weekly News is out. The summary says:
"
A possible standard for spell checking management, Enchant, is finally released after last week's announcement. The Open Text Summarizer reaches a level of complexity that will blow other summarisers out of the water. More GNOME HIGrrrification, help with OSX X11 and more we enter the week that will bring us 1.99.3."
Comments (none posted)
GnomeDesktop.org has
the announcement for version 1.99.3 of AbiWord.
"
Wow, just 3 weeks since the last release of our Word Processor
and we have tons of improvements."
Comments (none posted)
Miscellaneous
A new release of gFTP, an ftp client,
has been announced. A long list of changes is included.
Comments (none posted)
A new release candidate of
GNU LilyPond,
a music typesetting system, has been released.
This version features bug fixes and installation improvements.
Full Story (comments: none)
Languages and Tools
C
O'Reilly has published
part two in a three part series on secure programming in C/C++
"
In part two in this three-part series of sample recipes from Secure
Programming Cookbook for C and C++, the authors discuss some of the factors
to consider to properly decode a URL, and they provide example code
programmers can use to securely decode URLs.
"
You may want to start off with
part one of the series.
Comments (none posted)
Caml
The July 22-29, 2003 edition of the Caml Weekly News is out,
take a look for the latest Caml language news.
Full Story (comments: none)
FORTRAN
The
GNU Fortran 95
compiler has been integrated into a branch of the GCC CVS repository.
"
This branch of GCC will become part of official GCC releases by the time GCC 3.5 is released."
Comments (none posted)
Java
SourceForge has
an announcement for a new version of HTML Parser, a Java library.
"
This release includes a preliminary drop of the new I/O
subsystem (which isn't integrated yet), incorporates JUnit and Apache
commons-logging liraries (also not used yet), and adds several new tests of
the contents of the StringBean."
Comments (none posted)
O'Reilly has published
Part 3 of Vikram Goyal's series on Jakarta Commons.
"
Jakarta Commons is a Jakarta subproject that creates and maintains independent packages unrelated to any other framework or product. The packages are a collection of components that serve small, useful purposes in their own right, and are usually server-centric."
Comments (none posted)
Version 0.3a of RSSOwl
has been released.
"
RSSOwl is a RSS reader written complete in Java using SWT as fast graphic
libary. Some features are saving of RSS favorites in different categories and
a TabFolder that shows multiple RSS feeds. The following features were
implemented in version 0.3a: Open RSS feed from URL or local file, save RSS
feed favorites in categories, Change language english / german, Change
fontsize."
Comments (none posted)
Lisp
Version 0.8.2 of SBCL (Steel Bank Common Lisp) is available.
"
This is mostly a bug fix release,
with changes featuring an improved MACHINE-VERSION, better ANSI compliance,
optimizations to character compare routines, and improved disassembler
functionality on PPC."
Full Story (comments: none)
Perl
Perl.com has published Damian Conway's
Exegis 6.
"
This Exegesis explores the new subroutine semantics described in Apocalypse 6. Those new semantics greatly increase the power and flexibility of subroutine definitions, providing required and optional formal parameters, named and positional arguments, a new and extended operator overloading syntax, a far more sophisticated type system, multiple dispatch, compile-time macros, currying, and subroutine wrappers."
Comments (none posted)
Version 0.91 beta of gtk2-perl
is available.
"
This project provides perl bindings for gtk+ 2.x and a few related libraries.
This release includes several bugfixes, portability issues, and missing
functions in the latest betas for Gtk2 and Glib. Some dependency issues for
Gnome2 and Glade were also fixed."
Comments (1 posted)
The July 21-27, 2003 edition of
This Week on perl5-porters has been published.
"
This week, a lot of porters went to YAPC::Europe in Paris, so the list
traffic on the list was less important. It wasn't less interesting."
Comments (none posted)
PHP
Version 0.2.0 of kses is available.
"
kses is an HTML/XHTML filter written in PHP. It removes all
unwanted HTML
elements and attributes, no matter how malformed HTML input you give it. It
also does several checks on attribute values. kses can be used to avoid
Cross-Site Scripting (XSS), Buffer Overflows and Denial of Service attacks,
among other things."
Full Story (comments: none)
The
PHP Weekly Summary for July 28, 2003 is out. Topics include:
PHP 4.3.3 RC 2, PHP 5 TODO list, getenv() with THTTPD SAPI, Disabling @ operator, OCI8, temporary LOB, Apache2Filter, PHP 5 OO issues.
Comments (none posted)
Version 2.5.2 of phpMyAdmin
has been released with security fixes.
"
phpMyAdmin is a tool written in PHP intended to handle the
administration of MySQL over the http://www."
Comments (none posted)
SourceForge has
an announcement for a new version of Turck MMCache.
"
Turck MMCache is a PHP Accelerator, Optimizer, Encoder and Dynamic Content
Cache. It increases performance of PHP scripts by caching them in compiled
state, so that the overhead of compiling is almost completely eliminated.
Also it uses some optimizations for speed up of PHP scripts execution. Turck
MMCache typically reduces server load and increases the speed of your PHP
code by 1-10 times."
Comments (none posted)
Python
The July 28, 2003 edition of
Dr. Dobb's Python-URL! has been published.
Full Story (comments: none)
Tcl/Tk
The July 28, 2003 edition Dr. Dobb's Tcl-URL! is available.
Full Story (comments: none)
XML
Tony Hammond
illustrates
the advantages of RSS for serials news feeds.
"
RSS, a set of lightweight XML syndication technologies primarily used for relaying news headlines, has been adapted to a wide range of uses from sending out web site descriptions to disseminating blogs. This article looks at a new application area for RSS: syndicating tables of contents for serials publications."
Comments (none posted)
Danny Ayers
talks about RSS flavors on O'Reilly.
"
This article shows how the RDF foundation of RSS 1.0 helps when you want to extend RSS 1.0 for uses outside of strict news item syndication, and how existing RDF vocabularies can be incorporated into RSS 1.0. It concludes by providing a way to reuse these developments in RSS 2.0 feeds while keeping the formal definitions made with RDF."
Comments (none posted)
IDEs
A new version of DrJava, an open-source Java IDE,
is available.
"
This release includes many large new
features, including a more interactive debugger, Javadoc support, and support
for reading input from System.in."
Comments (none posted)
Profilers
Version 0.6 of OProfile, a system-wide source profiler for Linux,
has been released.
Full Story (comments: none)
Miscellaneous
Sourceforge has
an announcement for version 1.19 of make++.
"
make++ (or makepp) is a powerful but nearly 100% compatible replacement for
make that includes many features required for reliable builds of complicated
projects, such as automatic include file dependencies, automatic recompilation."
Comments (none posted)
Page editor: Forrest Cook
Linux in the news
Recommended Reading
Ian Murdock says "Linux is not a product. It is a process.", in
this article on
News.com. "
Let's step back a bit and look at why people are flocking
to Linux. It's an open platform that is not owned or controlled by any
single company. It comes with unmatched customization, optimization and
integration possibilities. It is the ideal "invisible engine" for driving
the next generation of applications and services. And it gives its users
greater control over the evolution of the underlying platform, putting the
user firmly in control of product release timelines and rollout
schedules. In short, with Linux, the balance of power has finally shifted
back from company to user."
Comments (6 posted)
Here is
the latest Gartner pronouncement on SCO, via ZDNet.
"
Don't ignore the problem by hoping IBM will win or settle its lawsuit (that could take a year or more). An IBM win would not prevent SCO from pursuing individual claims, which, if successful, could cost far more in penalties than buying a SCO license would." The article as a whole is somewhat FUDdish, but it may well be true that the community is putting too much of its faith in IBM's lawyers.
Comments (25 posted)
News.com
reports
that IBM is sending memos to its customers. "
SCO's latest actions
broadened its case against Linux beyond the $3 billion lawsuit it has filed
against IBM. Likewise, IBM's new message to its sales force--the chief way
it communicates with customers--is a significant expansion of its defense
over the narrower memos it sent earlier. Those memos said that IBM will
stand by its customers and defend itself vigorously."
Comments (33 posted)
Here's
a ZDNet opinion column about SCO which pulls no punches. There's not much new there for LWN readers, but it's nice to see it all together in that forum.
"
SCO's System V copyrights do not include rights to any of the code they are discussing: RCU, NUMA, JFS, SMP. RCU is patented by IBM. NUMA is not present in System V, and was independently developed by Sequent, SGI, and IBM (not SCO). SMP in Linux was originally assisted by SCO Caldera, and newer work includes functionality that no SCO product has ever included. IBM authored JFS originally for OS/2, not System V."
Comments (23 posted)
Companies
Novell
will support Linux
with its next release of the NetWare platform.
"
The firm described the offering as "a key stepping stone as customers prepare for future NetWare versions when all NetWare features will also run on Linux".
Novell recently detailed plans for the launch later this year of Novell Nterprise Linux Services, which extends many of the network services in NetWare 6.5 to Linux servers."
Comments (1 posted)
Yankee Group analyst Laura DiDio was one of the people who signed the SCO NDA and came away talking about what a great case SCO had. If there was any question of where she is coming from,
this Yankee pronouncement (on ZDNet) should make things clear.
"
SCO has wisely elected to adopt a flexible and reasonable position on the licensing fees it seeks from IBM corporate customers... SCO is well advised to pursue its current course and not seek retroactive fees dating back two years ago when IBM first shipped Linux 2.4."
Comments (8 posted)
Here's
an article in
the Inquirer on SCO's real mistake: upsetting the free software
community. "
Judging from its statements, SCO did not anticipate that
Linux developers and users would oppose its schemes so passionately and
publicly. But it should have known that it couldn't attempt to steal the
work of thousands of people with impunity. SCO has miscalculated --
attacking Open Source will prove its undoing in the final
reckoning."
Comments (12 posted)
Con Zymaris explains how the Australian Trade Practices Act is being used against SCO in
this Linux Journal article, and encourages similar action worldwide.
"
You should alert your consumer watchdog that you believe that SCO is
entering into conduct both misleading and deceptive to all Linux users in
your country. SCO has no verified claims whatsoever on Linux, and the
company is using the press to scare Linux users into forking over money for
protection."
Comments (3 posted)
Bear with us as we put up
one more SCO story. ZDNet has finally gotten around to looking at insider trading in SCO stock. "
Considering the company has only 13.5 million shares floating around, it is conceivable that the issuance of 45 million shares at a tenth of a cent each may dilute the list price somewhat."
Comments (4 posted)
TechWeb
looks at Sun's plans. "
Although Sun no longer makes its own Linux distribution on the server side, it plans to release by October its open-source Mad Hatter desktop operating system. Sun claims to have 60 PC makers, including Dell and Sony, lined up for Mad Hatter."
Comments (65 posted)
The consumer products company Unilever
has joined the Open Source Development Lab (OSDL).
"
"Unilever is a significant addition to OSDL's membership and is the first of many Global 2000 corporations that we expect will be joining us to contribute in improving Linux," said Stuart Cohen, CEO of OSDL. "We have expanded our charter to increase our participation in the Linux development community and with IT vendors, and with Unilever to begin investing in more programs for corporations to help ensure that Linux meets their requirements and solves their real-world business problems.""
Thanks to Craig Oda.
Comments (3 posted)
News.com
reports on
a partnership between SuSE and the database company SAP.
"
The new support deal between the two companies is aimed at streamlining the process for customers who run SAP business software on the SuSE Linux Enterprise Server. SuSE said those customers can now receive centralized support from engineers specifically trained in the combination of SuSE and SAP software. The engineers will provide assistance ranging from help with SAP applications to assistance with issues surrounding the Linux source code."
Comments (1 posted)
Linux Adoption
News.com
reports
that web sites continue to shift toward Linux, despite threats from SCO.
"
In May, SCO Group sent about 1,500 large companies letters alleging that Linux illegally includes Unix intellectual property SCO owns. SCO went a step further Monday, saying companies could avoid potential legal action by paying a licensing fee. But a survey shows that large companies are increasingly using Linux for their Web sites."
Comments (none posted)
Robin 'Roblimo' Miller
takes a
look at some government and military specifications to show that open
source specifications are not so outlandish. "
If the federal
government suddenly decided to acquire and use nothing but Open Source
software, this would not stop Microsoft, Adobe, and other big proprietary
software vendors from bidding on government contracts. It would simply mean
they'd need to open some of their source code if they wanted to do business
with the government."
Comments (none posted)
NewsForge
looks at
GNU/Linux in Asia. "
GNU/Linux is already reporting some
interesting deployments in the populous cash-strapped countries of the
region. In India, it is no coincidence that a number of low-cost PCs
hitting the market are now opting for Free Software-based solutions. China
has already worked out national distros of GNU/Linux that are in the local
language and also meet national concerns in terms of security. Pakistan has
seen government initiatives to boost the role of FLOSS, so as to become
less dependent on proprietary software, with it accompanying allegations of
piracy against countries with low incomes and poor conversion rates against
the dollar. Thailand is finding GNU/Linux a useful solution in its
Schoolnet program."
Comments (1 posted)
Interviews
Here's an
interview
with some of the Galeon developers on the Galeon website. This
MozillaZine
article has a pointer to the article and to discussions on the
article. When asked about the health of the project Yanko Kaneti wrote:
"
Pretty healthy all things considered. Not being "the official GNOME
browser". Excluded from Red Hat rawhide. Dissed for all the wrong reasons
by uninformed people. - Yet people still seem to be interested and most
importantly "external" patches seem to have picked up recently, which is
just great. Many thanks."
Comments (none posted)
Linux Journal has
an interview with
Brian Kernighan, one of the creators of AWK and AMPL. "
LJ: You
have worked in Bell Labs, alongside Bjarne Stroustrup, Ken Thompson and
Dennis Ritchie. What kind of relations do you have with them? Were you
like a big, wise family? BK: We were all friends and close colleagues for
many years, all in the same small group at Bell Labs. Ken, Dennis and I
are all about the same age, and we all came to the Labs about the same
time; Bjarne came 10 years later. I wouldn't call it family, but it was
definitely good friends, and I miss seeing them all every day, which is the
way it was for many years."
Comments (5 posted)
The Borland developer network features
an interview of Bruce Eckel.
"
OOP guru Bruce Eckel talks about his initial skepticism about C# (but now calls it "a better Java"), wishes Borland would create a Python IDE, explains why he's suspicious of Mono, and asks us to click the wombat."
Comments (1 posted)
Resources
Joe Barr
writes about his experiences networking an eMac to a Linux box.
"
I recently decided to start making more use of a neglected computer of mine. It's an eMac that has been sitting quietly on my kitchen table the past two years. I decided to explore how best to share files, printers, and applications between a Macintosh and my desktop Linux box."
Comments (none posted)
Peter Seebach
shows how to set up a Linux-based wireless access point on IBM's
developerWorks.
"
n this article, I'll take you through the process of building a wireless access point running Linux. I won't cover every last line of code, every intermediate step, or every detail of hardware; that would take a book and would be obsolete by the time you read it. The goal is to show you what kinds of concerns and pitfalls you'll face should you want to do this. For this piece, we build the access point to operate as a bridge; simply forwarding packets between the wireless network and a local ethernet. This allows wireless devices to simply be turned on and attached using your existing network -- no new configuration, no special routing."
Comments (none posted)
Reviews
NewsForge
reviews Scribus 1.0.
"
It still has bugs to be found and fixed, features to be added, distribution-specific installation and quirks to be resolved, and documentation to be written. But even with that to-do list, it's starting in much better shape than Seabiscuit did. Scribus is destined to join the GIMP as one of the crown jewels of the free software world."
Comments (none posted)
A review of Zinf, with comparisons to other Linux music
players, as been published.
"
Zinf is a fairly new arrival on the scene of Linux music players. Yet, it already has the grace and feature set of a mature application. This is due to the fact that is a descendent of the defunct freea*p project.
Zinf smoothly handles playing sound files, CD tracks and streams from the Internet."
Comments (none posted)
Miscellaneous
This week's
WorldWatch Week in
Review from Linux Journal covers FUD-slinging from SCO, Linux in
Afganistan and a guest editorial reprint from LinuxFrench.net on the EU
patent vote, and other news from around the world.
Comments (none posted)
Page editor: Forrest Cook
Announcements
Non-Commercial announcements
The Open Group, owner of the Unix trademark, has been working with Bruce
Perens to develop an Open Source strategy for the Group. Now a
draft strategy document is out, and the Open Group is soliciting
comments. "
The Open Group is faced with challenges and opportunities
regarding Open Source software. Foremost is the organization's
responsibility to guide its members in use of, and participation in, Open
Source. Secondarily, as an organization we must catch up: we couldn't have
known that Open Source would be this successful, and it brings profound
changes to our main areas of practice: Open Systems and Standards. We must
now fully integrate Open Source into our operation. If not, it's time to
change the name of our organization."
Comments (13 posted)
If you are using the Lisp language, you may want to take a few minutes
to fill out a few questions on Kenny Tilton's
The Road to Lisp Survey.
Full Story (comments: none)
Commercial announcements
Here's
a press release from IBM announcing yet another Linux cluster sale; this one is going to the Japanese Institute of Advanced Industrial Science and Technology. The announcement is interesting in that the cluster is made up of IBM's eServer 325 systems, which will be announced at LinuxWorld. The 325 is based on AMD's Opteron ("Hammer", "x86-64", "AMD64") processor, and it will be, it is said, the most powerful Linux cluster in the world.
Comments (none posted)
MandrakeSoft has posted
a shareholder newsletter for the first half of fiscal 2003. The company lost EUR 1.2 million on EUR 2.1 million in revenue over that time. Despite the loss, the company claims to be cash-flow positive since January. MandrakeSoft's bankruptcy period ends on July 27, but the company is looking to extend it for another six months.
Comments (none posted)
Sleepycat Software has
announced that their Berkeley DB database software now ships with
Python 2.3 and a recent version of Zope.
Comments (none posted)
SuSE Linux and SAP
have announced a a support agreement that is aimed at supporting
corporate customers around the world.
"
Under the agreement, SuSE will collaborate with SAP on support for
joint enterprise customers -- providing optimum support for
mission-critical SAP(R) business solutions on SuSE Enterprise
Server, powered by United Linux."
Comments (none posted)
Subscriptions to the print magazine ZopeMag
are available at a discount for several weeks.
Comments (none posted)
New Books
O'Reilly has released the second edition of
"Building Wireless Community Networks".
Full Story (comments: none)
O'Reilly has published the "Secure Programming Cookbook for C and C++".
Full Story (comments: none)
O'Reilly has published an online version of
"PNG: The Definitive Guide", by Greg Roelofs.
Full Story (comments: none)
Resources
GnomeDesktop.org
mentions
the availability of an updated
GNOME Installation Guide.
This version includes information on GNOME 2.2.2.
Comments (none posted)
The July 29, 2003 edition of the LDP Weekly News is out
with the latest Linux documentation updates.
Full Story (comments: none)
Contests and Awards
IDG World Expo has
announced the finalists for the LinuxWorld Product Excellence Awards,
to be presented at LinuxWorld Conference & Expo next week.
Comments (none posted)
Nominations are open for the first Open Source Awards,
to be presented at OSCON 2004.
Full Story (comments: none)
Event Reports
A set of slides and a post-BOF conclusion paper
have been posted for the GUADEC BOF session,
"KDE, Mac Os X, Windows: What can we learn (copy or improve) from them?".
Comments (none posted)
Upcoming Events
Open-source evangelist Bruce Perens will give a speech entitled the
"Open Source State of the Union" on August 6, 2003 during the
LinuxWorld Conference.
Full Story (comments: none)
Several Bay Area Linux groups will be holding an event known as
Picn*x12 on August 9 in Sunnyvale, CA, following the
LinuxWorld Expo conference. The theme is the celebration of
the birthday of the Linux operating system.
"
The picnic event is completely free, and free food will be served.
It's a family-oriented gathering, so bringing the spouse and kids is
encouraged! You must RSVP in advance, however."
Full Story (comments: none)
According to Use Perl, the YAPC::Europe 2004 conference
will be held in Belfast, Northern Ireland.
Comments (none posted)
Use Perl has
an announcement for the YAPC::Israel::2004 conference, to be held
in February.
"
After the successful year of 4 YAPCs we would like to announce
the first call for participation, papers and sponsorship of
YAPC::Israel::2004".
Comments (none posted)
The GNOME Foundation
is looking for a host city for the GUADEC 2004 conference.
Comments (none posted)
| Date | Event | Location |
| July 31 - August 3, 2003 | UKUUG Linux Developers' Conference(LINUX 2003) | (George Watson's College)Edinburgh Scotland |
| July 31 - August 2, 2003 | The 10th Annual Tcl/Tk Conference | Ann Arbor, Michigan |
| August 4 - 7, 2003 | LinuxWorld Conference and Expo 2003 | (Moscone Convention Center)San Francisco, CA |
| August 5 - 7, 2003 | 5th Annual CERT Conference(NEbraskaCERT) | (Scott Conference Center)Omaha, NE USA |
| August 7 - 10, 2003 | Chaos Communication Camp 2003 | Paulshof, Altlandsberg, Germany |
| August 18 - 21, 2003 | New Security Paradigms Workshop 2003(NSPW 2003) | (Centro Stefano Francini)Ascona, Switzerland |
| August 22 - 30, 2003 | KDE Developers' Conference | (Zamek Castle)Nove Hrady, Czech Republic |
| August 27 - 29, 2003 | International Conference on Principles and Practice of Declarative Programming(PPDP 2003) | (Uppsala University)Uppsala, Sweden |
| September 3 - 4, 2003 | LinuxWorld Conference & Expo (Cancelled) | (The NEC)Birmingham, UK |
| September 8, 2003 | Boundaryless Information Flow: Open Source in the Enterprise | (Hilton London Paddington)London, UK |
| September 11 - 12, 2003 | Python for Scientific Computing Workshop(SciPy'03) | (CalTech)Pasadena, CA |
| September 15 - 18, 2003 | LogOn Web Days | Across Europe |
| September 15 - 18, 2003 | Embedded Systems Conference(ESC) | (Hynes Convention Center)Boston, Mass |
Comments (none posted)
Web sites
MozillaZine
examines the new
java.mozdev.org site.
"
Brad GNUberg writes: "The goal is simple. Build a Mozilla application so that a Java backend can be used to interact with a Mozilla/XUL front-end. It makes sense. Combine the power of Java's server libraries with the interactivity and user interface capability of Mozilla. Kevin Burton and Brad GNUberg are proud to announce java.mozdev.org, a central repository for open-source projects making this vision true."
Comments (none posted)
MozillaZine
mentions the launch of a new French language Mozilla site,
Geckozone.
"
Initiated by several members of the Frenchmozilla localization team, this new
site is targeted to French-speaking people seeking information, help and
tutorials on Mozilla-based products."
Comments (none posted)
Software announcements
Here are the software announcements, courtesy of
Freshmeat.net. They are available in
two formats:
Comments (none posted)
Miscellaneous
According to LinuxMedNews, HSC
has released their zWebit interface engine under the GPL.
"
zWebit has proven stable and reliable in a 250 bed hospital
supporting twelve interface connections."
Comments (none posted)
Page editor: Forrest Cook