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Security
Brief items
As detailed in this CERT advisory, the
sendmail source distribution on ftp.sendmail.org was replaced by a version
containing a trojan horse. The modified code stayed on the server from
September 28 through October 6. The trojan was invoked during
the build process; it would fire off a process that would listen for
commands on port 6667. If you downloaded and installed sendmail during
that time period, you need to take a serious look at the integrity of your
systems.
Free software is supposed to be more secure because the source can be
examined for this sort of thing. Yet this particular bit of malware
managed to stay on a high-profile server for over a week. When you
consider that, for example, the Interbase back door went undiscovered for
over a year, one week does not seem all that bad. But one week is plenty
of time to compromise a great many systems.
What is truly surprising is that we have not seen more of this sort of
problem. Trojanized source distributions are scary; a compromised binary
package is truly terrifying. There will be more - and worse -
episodes of this nature in the future.
Of course, we have the tools to defend against most of these attacks. If
you put up software for others to download, you should sign it with a
cryptographic key. If you download software, you should check that
signature. As long as the signing keys are handled carefully
(i.e. not stored on the FTP server!), this bit of hygene will detect
almost all tampering attacks. Without such checks, administrators are
placing a great deal of trust in the security of every system they download
software from.
Comments (2 posted)
New vulnerabilities
Apache shared memory scoreboard vulnerabilities
| Package(s): | apache |
CVE #(s): | CAN-2002-0839
|
| Created: | October 9, 2002 |
Updated: | December 18, 2002 |
| Description: |
Versions of Apache prior to 1.3.27 contain a couple of scoreboard-related
vulnerabilities which can be exploited by local users running under the
Apache user ID. In-server scripting languages, such as PHP, are the most
likely means of carrying out the attacks. One vulnerability causes the
server to fork off new processes, leading to denial of service scenarios;
the other allows an attacker to send SIGUSR1 to any process as root,
probably killing that process. See this
iDEFENSE advisory for the details. |
| Alerts: |
|
Comments (3 posted)
SSL certificate validation vulnerability in evolution
| Package(s): | evolution |
CVE #(s): | |
| Created: | October 9, 2002 |
Updated: | October 9, 2002 |
| Description: |
The evolution mail client does not properly check SSL certificates, leaving
it open to man-in-the-middle attacks; see this
advisory for details. Versions 1.0.x are vulnerable; the 1.1 beta
branch is not. |
| Alerts: |
(No alerts in the database for this vulnerability)
|
Comments (none posted)
Buffer overflow in nss_ldap
| Package(s): | nss_ldap |
CVE #(s): | CAN-2002-0825
CAN-2002-0374
|
| Created: | October 9, 2002 |
Updated: | December 11, 2002 |
| Description: |
The nss_ldap package has a buffer overflow which can be exploited when the
module configures itself from information in DNS. The problem is fixed in
nss_ldap-199 and later. |
| 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)
Temporary file vulnerability in tkmail
| Package(s): | tkmail |
CVE #(s): | |
| Created: | October 9, 2002 |
Updated: | October 9, 2002 |
| Description: |
The tkmail package has a temporary file vulnerability; a local attacker can
use this hole to overwrite files owned by a local user. |
| Alerts: |
|
Comments (none posted)
Updated vulnerabilities
Apache 2.0 cross-site scripting vulnerability
| Package(s): | apache |
CVE #(s): | CAN-2002-0840
|
| Created: | October 2, 2002 |
Updated: | October 2, 2002 |
| Description: |
Versions of Apache 2.0 prior to 2.0.43 have a
cross-site scripting vulnerability in the error page handling code. If
you are running Apache 2.0, this one is worth fixing. |
| Alerts: |
(No alerts in the database for this vulnerability)
|
Comments (none posted)
Heap corruption vulnerability in at
| Package(s): | at at, sudo, xchat |
CVE #(s): | CAN-2002-0004
|
| Created: | May 21, 2002 |
Updated: | May 15, 2003 |
| Description: |
The at command has a
potentially exploitable heap corruption bug.
(First LWN report: January 17th).
|
| 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)
Multiple vulnerabilities in bugzilla
| Package(s): | bugzilla |
CVE #(s): | |
| Created: | October 2, 2002 |
Updated: | October 9, 2002 |
| Description: |
The Bugzilla bug tracking system (versions prior to 2.14.4 or 2.16.1)
suffers from a number of vulnerablities, including one which could result
in remote command and SQL injection. An upgrade to 2.16.1 is recommended,
since the 2.14 branch will be unmaintained after the end of the year. See
the Bugzilla advisory for details. |
| Alerts: |
|
Comments (1 posted)
Potential unauthorized root access vulnerability in dietlibc
| Package(s): | dietlibc |
CVE #(s): | CAN-2002-0391
|
| Created: | August 14, 2002 |
Updated: | December 5, 2002 |
| Description: |
Felix von Leitner, discovered a
potential division by zero bug in
code derived from the SunRPC library with is used in
dietlibc, a libc optimized for small size.
The bug could be exploited to gain unauthorized root
access to software linking to dietlibc.
CERT/CC Vulnerability Note VU#192995 Integer
overflow in xdr_array() function when deserializing the XDR stream |
| Alerts: |
|
Comments (none posted)
Ethereal buffer overflow, infinite loop and memory management vulnerabilities
| Package(s): | ethereal |
CVE #(s): | CAN-2002-0012
CAN-2002-0013
CAN-2002-0353
CAN-2002-0401
CAN-2002-0402
CAN-2002-0403
CAN-2002-0404
|
| Created: | June 12, 2002 |
Updated: | October 27, 2002 |
| Description: |
Ethereal 0.9.4
was released
on May 19, 2002 fixing four potential security issues in Ethereal 0.9.3:
- The SMB dissector could potentially dereference a NULL pointer in two cases.
- The X11 dissector could potentially overflow a buffer while parsing keysyms.
- The DNS dissector could go into an infinite loop while reading a malformed packet.
- The GIOP dissector could potentially allocate large amounts of memory.
No known exploits exist "in the wild" at the present time for any of these issues.
Ethereal 0.9.2 has several packet handling vulnerabilities
that are best avoided by upgrading to 0.9.4.
The PROTOS test
suite found some flaws in SNMP and LDAP protocols support.
Malformed packets could also crash ethereal 0.9.2 due to a
ASN.1 zero-length g_malloc problem.
The zlib "double free" vulnerability
was addressed by the updates for that bug from many distributors. |
| 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)
Another set of fetchmail buffer overflows
| Package(s): | fetchmail fetchmail-ssl |
CVE #(s): | |
| Created: | October 1, 2002 |
Updated: | December 17, 2002 |
| Description: |
e-matters GmbH has issued an advisory
warning of a new set of buffer overflows in the fetchmail header parsing
code. The vulnerabilities have been fixed in fetchmail 6.1.0. |
| Alerts: |
|
Comments (none posted)
GNU fileutils race condition
| Package(s): | fileutils ucdsnmp |
CVE #(s): | CAN-2002-0435
|
| Created: | May 21, 2002 |
Updated: | May 16, 2003 |
| Description: |
A race
condition in rm may cause the root user to delete the whole filesystem.
The problem exists in the version of rm in
fileutils
4.1 stable and 4.1.6 development version. A patch
is available.
(First LWN
report: May 2).
|
| Alerts: |
|
Comments (none posted)
Potential remote root exploit in glibc
| Package(s): | glibc |
CVE #(s): | CAN-2002-0391
|
| Created: | August 14, 2002 |
Updated: | June 30, 2003 |
| Description: |
Felix von Leitner, discovered a
potential division by zero bug in
code derived from the SunRPC library which is used in glibc.This bug could be
exploited to gain unauthorized root access to software linking to glibc.
Updating as soon as practical is a good idea.
Because SunRPC-derived XDR libraries are used by a variety of vendors in a variety of applications, this defect may lead to a number of differing security problems. Exploiting this vulnerability will lead to denial of service, execution of arbitrary code, or the disclosure of sensitive information.
CERT/CC Vulnerability Note VU#192995 Integer
overflow in xdr_array() function when deserializing the XDR stream
|
| Alerts: |
|
Comments (none posted)
Buffer overflow in groff
| Package(s): | groff |
CVE #(s): | CAN-2002-0003
|
| Created: | May 21, 2002 |
Updated: | December 9, 2002 |
| Description: |
The groff package has a buffer overflow
vulnerability; if it is used with the print system, it is conceivably
exploitable remotely.
|
| Alerts: |
|
Comments (none posted)
Buffer overflow in gv
| Package(s): | gv |
CVE #(s): | CAN-2002-0838
|
| Created: | October 1, 2002 |
Updated: | November 25, 2002 |
| Description: |
gv, a graphical front end to ghostscript, has a buffer overflow
vulnerability which can be exploited by a properly crafted PostScript or
PDF file. If a user can be tricked into viewing such a file, arbitrary
code can be executed with that user's privileges. See this iDEFENSE advisory for the details. |
| Alerts: |
|
Comments (none posted)
Buffer overflows in heimdal
| Package(s): | heimdal |
CVE #(s): | |
| Created: | October 1, 2002 |
Updated: | October 17, 2002 |
| Description: |
A SuSE security team audit of the heimdal Kerberos implementation turned up sever buffer overflow vulnerabilities. No exploits are known as of this writing, but these vulnerabilities are almost certainly possible for a remote attacker to exploit; if you are running heimdal, you should upgrade at the first opportunity. |
| Alerts: |
|
Comments (none posted)
HylaFAX 4.1.3 fixes multiple vulnerabilities
| Package(s): | hylafax |
CVE #(s): | CAN-2001-1034
|
| Created: | July 30, 2002 |
Updated: | October 9, 2002 |
| Description: |
The HylaFAX team has
released version 4.1.3 fixing
denial of service, elevated system privilege and possible
remote code execution vulnerabilities.
HylaFAX is a mature (est. 1991) enterprise-class open-source software
package for sending and receiving facsimiles as well as for sending
alpha-numeric pages. It runs on a wide variety of UNIX-like platforms
including Linux, BSD (including Mac OS X), SunOS and Solaris, SCO, IRIX,
AIX, and HP-UX.
|
| Alerts: |
|
Comments (none posted)
UW imapd remotely exploitable buffer overflow
| Package(s): | imap |
CVE #(s): | CAN-2002-0379
|
| Created: | June 5, 2002 |
Updated: | December 20, 2002 |
| Description: |
UW imapd versions 2000c and prior allow remote authenticated users to execute code via a buffer overflow. A malicious user can craft
a request to run commands on the server under their UID and GID.
(First LWN report: May 23). |
| Alerts: |
|
Comments (2 posted)
Cross-site scripting vulnerability in Konqueror for KDE 3.0.3
| Package(s): | kdelibs |
CVE #(s): | |
| Created: | September 17, 2002 |
Updated: | November 18, 2002 |
| Description: |
Konqueror for KDE 3.0.3, and earlier versions, is subject to
this cross-site
scripting vulnerability.
Since the problem is in kdelibs, any other application which
uses the KHTML renderer is also vulnerable.
Javascript code running in one frame can
access other frames which should be inaccessible. The problem is
fixed in kdelibs 3.0.3a. |
| Alerts: |
|
Comments (2 posted)
Kerberos 5 unauthorized root access to KDC host vulnerability
| Package(s): | krb5 |
CVE #(s): | |
| Created: | August 14, 2002 |
Updated: | October 29, 2002 |
| Description: |
A bug in the Kerberos 5 remote
administration service, "kadmind", could be
exploited to gain unauthorized root access to a KDC host.
It is believed that the attacker needs to be able to
authenticate to the kadmin daemon for this attack to be successful.
Felix von Leitner, discovered this
potential division by zero bug in
code derived from the SunRPC library which is used
in many places, including the Kerberos 5 administration system.
Updating now is recommended.
CERT/CC Vulnerability Note VU#192995 Integer
overflow in xdr_array() function when deserializing the XDR stream
|
| Alerts: |
|
Comments (none posted)
LPRng accepts jobs from any host.
| Package(s): | LPRng |
CVE #(s): | CAN-2002-0378
|
| Created: | June 12, 2002 |
Updated: | October 31, 2002 |
| Description: |
Matthew Caron pointed out that LPRng's default configuration accepts job submissions from any host.
This could be an especially annoying vulnerability for adminstrators
with systems exposed to the general public.
|
| Alerts: |
|
Comments (none posted)
Cross-site scripting vulnerability in mhonarc
| Package(s): | mhonarc |
CVE #(s): | CAN-2002-0738
CAN-2002-1307
CAN-2002-1388
|
| Created: | September 11, 2002 |
Updated: | January 3, 2003 |
| Description: |
Mhonarc is an HTML formatter for electronic mail; it can be vulnerable to cross-site scripting problems when presented with maliciously crafted messages. This problem is fixed in mhonarc version 2.5.3, but it is not clear that all possible vulnerabilities have been fixed. See the Debian advisory below for information on how to disable text/html attachment support in mhonarc, which may be a more secure solution. |
| Alerts: |
|
Comments (none posted)
PHP Remote Compromise/DOS Vulnerability
| Package(s): | mod_php4 |
CVE #(s): | |
| Created: | July 22, 2002 |
Updated: | February 18, 2003 |
| Description: |
PHP 4.2.0 and 4.2.1 have an error in the handling of POST requests which
can lead to the corruption of memory, and the usual bad consequences. According to this alert, the vulnerability can only be used for denial of service on x86 systems - there is no way to get it to run exploit code. SPARC/Solaris systems are apparently vulnerable to full remote compromise.
According to the CERT Advisory,
almost every Linux distributor, it seems, ships older (and thus not vulnerable) versions of PHP.
Note that, sometimes, systems thought to be safe from remote compromise turn out to be vulnerable to a modified attack, so x86 users should not relax too much. The solution, for those systems with PHP
4.2.0 or 4.2.1 installed,
is to upgrade to PHP 4.2.2.
For more information see the alert from
the discover of the vulnerability, Stefan Esser of e-matters GmbH,
or the security
advisory from the php team.
CERT Advisory: CA-2002-21 Vulnerability in PHP |
| Alerts: |
|
Comments (1 posted)
Mozilla XMLHttpRequest file disclosure vulnerability
| Package(s): | mozilla |
CVE #(s): | CAN-2002-0354
|
| Created: | May 21, 2002 |
Updated: | October 18, 2002 |
| Description: |
This XMLHttpRequest security
bug impacts all Mozilla-based browsers. "The bug is found in versions of
Mozilla from 0.9.7 to 0.9.9 on various operating
system platforms, and in Netscape versions 6.1 and
higher."
(First LWN
report: May 2).
|
| Alerts: |
|
Comments (none posted)
String format bug in pam_ldap logging
| Package(s): | nss_ldap |
CVE #(s): | CAN-2002-0374
|
| Created: | June 5, 2002 |
Updated: | October 29, 2002 |
| Description: |
The nss_ldap package includes the pam_ldap module for
authenticating a user with an LDAP database.
Pam_ldap versions prior to 144 have a string format
bug in the logging mechanism. |
| Alerts: |
|
Comments (none posted)
Safemode vulnerability in PHP
| Package(s): | PHP |
CVE #(s): | CAN-2001-1246
|
| Created: | August 20, 2002 |
Updated: | October 9, 2002 |
| Description: |
PHP versions 4.0.5 through 4.1.0 fail to properly cleanse a parameter to the mail() function, allowing arbitrary command execution by local and (possibly) remote attackers. |
| Alerts: |
|
Comments (none posted)
Remotely exploitable vulnerability in pine
| Package(s): | pine |
CVE #(s): | CAN-2002-0014
|
| Created: | May 21, 2002 |
Updated: | November 27, 2002 |
| Description: |
Pine has an
unpleasant
vulnerability in URL handling vulnerability which can lead to
command execution by remote attackers.
(First LWN report: January 17th).
This vulnerability is remotely exploitable; updating is a good idea.
Note: If an update isn't yet available for your distribution,
setting enable-msg-view-urls to "off" in pine's setup will
avoid the vulnerability. (Thanks to Greg Herlein).
|
| Alerts: |
|
Comments (none posted)
Buffer overflow vulnerabilities in PostgreSQL
| Package(s): | PostgreSQL |
CVE #(s): | |
| Created: | August 21, 2002 |
Updated: | January 27, 2003 |
| Description: |
PostgreSQL 7.2.2 has been released in response to a number of buffer
overrun vulnerabilities which have been identified recently. "...it
should be noted that these vulnerabilities are only critical on 'open' or
'shared' systems, as they require the ability to be able to connect to the
database before they can be exploited."
Buffer overflow vulnerabilities fixed include those reported by
"Sir Mordred The Traitor" in the cash_words,
repeat, and lpad
and rpad functions. |
| Alerts: |
|
Comments (none posted)
PXE server denial of service vulnerability
| Package(s): | pxe |
CVE #(s): | CAN-2002-0835
|
| Created: | September 4, 2002 |
Updated: | November 11, 2002 |
| Description: |
The PXE server can be crashed using DHCP packets from
some Voice Over IP (VOIP) phones. Maliciously formed
DHCP packets could be used by a remote attacker to effect a
denial of service attack.
The PXE package contains the PXE (Preboot eXecution Environment)
server and code needed for Linux to boot from a boot disk image on a
Linux PXE server.
|
| Alerts: |
|
Comments (none 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)
sendmail smrsh bypass vulnerability
| Package(s): | sendmail |
CVE #(s): | CAN-2002-1165
|
| Created: | October 2, 2002 |
Updated: | November 29, 2002 |
| Description: |
iDEFENSE has posted an advisory warning of a
couple of ways of bypassing the restrictions imposed by the sendmail
"smrsh" utility. smrsh puts limits on which programs a user may run out of
a .forward file; this vulnerability could give a local user
undesired access to the mail server system. A patch has
been made available from sendmail.org which closes the vulnerability. |
| Alerts: |
|
Comments (none posted)
Sharutils potential privilege escalation using uudecode
| Package(s): | sharutils |
CVE #(s): | CAN-2002-0178
|
| Created: | May 21, 2002 |
Updated: | October 31, 2002 |
| Description: |
According to the CVE entry,
"uudecode, as available in the sharutils package before 4.2.1, does not
check whether the filename of the uudecoded file is a pipe or symbolic
link, which could allow attackers to overwrite files or execute commands."
(First LWN
report: May 16).
|
| Alerts: |
|
Comments (none posted)
Multiple vulnerabilities fixed in Squid-2.4.STABLE7
| Package(s): | squid |
CVE #(s): | |
| Created: | July 8, 2002 |
Updated: | November 15, 2002 |
| Description: |
Here is the security advisory for the Squid proxy server reporting several vulnerabilities in versions up to and including 2.4.STABLE7.
Several of the bugs are believed to allow remote code execution.
The security advisory lists the following
changes:
- Several bugfixes and cleanup of the Gopher client, both
to correct some security issues and to make Squid properly
render certain Gopher menus.
- Security fixes in how Squid parses FTP directory listings into
HTML
- FTP data channels are now sanity checked to match the address
of the requested FTP server. This to prevent theft or injection
of data. See the new ftp_sanitycheck directive if this sanity
check is not desired.
- The MSNT auth helper has been updated to v2.0.3+fixes for
buffer overflow security issues found in this helper.
- A security issue in how Squid forwards proxy authentication
credentials has been fixed
|
| 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)
Malformed NFS packet buffer overflow vulnerability in tcpdump
| Package(s): | tcpdump |
CVE #(s): | CAN-2002-0380
|
| Created: | June 5, 2002 |
Updated: | October 9, 2002 |
| Description: |
A buffer overflow in tcpdump can be triggered by a bad NFS packet when
tracing the network. Unmodified tcpdump versions 3.6.2 and earlier are vulnerable.
|
| 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)
Tomcat 4.x JSP source code exposure vulnerability
| Package(s): | tomcat |
CVE #(s): | |
| Created: | September 25, 2002 |
Updated: | January 29, 2003 |
| Description: |
Rossen Raykov reports that Tomcat 4.0.5 and 4.1.12 fix a JSP source code exposure vulnerability
in "Tomcat 4.0.4 and 4.1.10 (probably all other earlier versions also).".
The current version of Tomcat is available here.
|
| Alerts: |
|
Comments (none posted)
Local root vulnerability in chfn
| Package(s): | util-linux |
CVE #(s): | CAN-2002-0638
|
| Created: | July 30, 2002 |
Updated: | October 31, 2002 |
| Description: |
chfn (change finger information) is one of the utilities in
the util-linux package.
The BindView RAZOR Team has discovered a local root vulnerability
in chfn which is described in the Bindview Advisory.
Under certain conditions, "a
carefully crafted attack sequence can be performed to exploit a
complex file locking and modification race present in this utility,
and, as a result, alter /etc/passwd to escalate privileges in the
system." The conditions include a password file, /etc/passwd, over 4 kilobytes and locating the attacker's account record in any
but the last 4 kB chunk of the file.
CERT/CC Vulnerability Note VU#405955 util-linux package vulnerable to privilege escalation when "ptmptmp" file is not removed properly when using "chfn" utility |
| Alerts: |
|
Comments (none posted)
webalizer: reverse DNS buffer overflow vulnerability
| Package(s): | webalizer |
CVE #(s): | |
| Created: | May 21, 2002 |
Updated: | January 27, 2003 |
| Description: |
The cause is a buffer overflow bug.
This one sounds nasty.
If reverse DNS lookups are enabled in webalizer,
"an attacker with control over the victims DNS may spoof responses thus
triggering a buffer overflow, potentially leading to a root compromise."
Webalizer 2.01-10 "fixes this and a few
other buglets that have been discovered in the last month or so".
(First LWN report: April 18th, 2002).
|
| Alerts: |
|
Comments (none posted)
Webmin/Usermin vulnerabilities
| Package(s): | webmin |
CVE #(s): | |
| Created: | May 21, 2002 |
Updated: | January 10, 2003 |
| Description: |
Webmin is a web-based interface for
system administration for Unix.
Webmin has cross-site scripting and
session ID spoofing vulnerabilities
which are fixed in the May 6, 2002 release of version 0.970.
(First LWN
report: May 9).
This one is scary. The session ID
spoofing vulnerability allows the "possibility that arbitrary
commands may be executed with root privileges."
Upgrading is strongly recommended. At a minimum avoid the
"preconditions for a successful exploit" by disabling
password timeouts under Webmin->Configuration->Authentication.
|
| Alerts: |
|
Comments (1 posted)
Multiple vulnerabilities in wordtrans
| Package(s): | wordtrans |
CVE #(s): | CAN-2002-0837
|
| Created: | September 11, 2002 |
Updated: | February 4, 2003 |
| Description: |
The "wordtrans" interface to multilingual dictionaries suffers from input validation and cross-site scripting vulnerabilities; versions through 1.1pre8 are vulnerable. See this Guardent advisory for details. |
| Alerts: |
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Comments (none posted)
Problems with libgtop_daemon
| Package(s): | wuftpd libgtop |
CVE #(s): | |
| Created: | May 21, 2002 |
Updated: | May 7, 2003 |
| Description: |
The libgtop_daemon package is a GNOME
program which makes system information available remotely.
LWN reported the remotely exploitable format
string and buffer overflow vulnerabilities in that package
on December 6th.
On November 28th
disabling the libgtop_daemon on systems where it is running until
an update is available.
Many Linux systems do not run
libgtop by default, but applying the update is a good idea anyway.
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| Alerts: |
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Comments (1 posted)
Wwwoffle remote privilege escalation vulnerability
| Package(s): | wwwoffle |
CVE #(s): | CAN-2002-0818
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| 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: |
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Comments (none posted)
Local privilege escalation vulnerability in XFree86
| Package(s): | xf86 xfree86 |
CVE #(s): | |
| Created: | September 18, 2002 |
Updated: | October 27, 2002 |
| Description: |
XFree86 version 4.2.1 fixes a problem in
Xlib that made it possible to execute arbitrary code in privileged clients.
Other libraries are dynamically loaded by libX11.so as needed.
When linking against a setuid program, arbitrary code
could be loaded and executed from a pathname controlled by the user.
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| Alerts: |
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Comments (none posted)
Denial of service vulnerability in xinetd
| Package(s): | xinetd |
CVE #(s): | |
| Created: | August 14, 2002 |
Updated: | December 3, 2002 |
| Description: |
A file descriptor leak into services started from xinetd
may be used, by programs it stats, to crash xinetd.
Xinetd is a replacement for the BSD derived inetd. |
| Alerts: |
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Comments (none posted)
Resources
The LinuxSecurity.com "Linux Security Week" newsletter for October 7
is available.
Full Story (comments: none)
News.com has a report from Whitfield Diffie's talk at the RSA conference.
" Diffie also said that security cannot be delegated, nor can a user rely on one company for security. 'Openness is essential for trust,' he said, referring to open-source code, as well as compatibility."
Comments (none posted)
Michael D. Bauer
talks about Linux security issues on O'Reilly.
" I don't presume to know in any definitive way whether Linux is more or less securable than other Unix variants. What I do know is this: Linux is useful, stable, and securable enough to warrant the time and effort required to "harden" it against Internet threats. This article explains some of the reasons I believe it's both possible and worthwhile to secure Linux for use as an Internet server platform."
Comments (none posted)
Events
The 19th annual Chaos Computer Club Congress will be held in Berlin on
December 27 to 29. The Call for Papers has gone out; no deadline
for submissions has been specified. " So, do you dare to speak in
front of people who might have downloaded your
script from your computer in advance and spotted all the logical
errors?"
Full Story (comments: none)
The 2003 Computers, Freedom, and Privacy conference will be held
April 1 to 4 in New York. The Call for Papers is out, with a
deadline of November 15.
Full Story (comments: none)
Page editor: Jonathan Corbet
Next page: Kernel development>>
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