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Security
Brief items
Many readers will, by now, be familiar with the results of "SoBig," this
week's worm afflicting Microsoft systems. This worm, by some
estimates, is accounting for some 70% of all email traffic on the net
as this article is being written. Even those of us smugly running Linux,
and who are thus not directly susceptible to this worm, have been affected
by the flood of incoming email.
Interestingly, here at LWN we might have remained almost unaware of this
worm. SpamAssassin does a perfectly
fine job of filtering out SoBig mail; it never made it to our mailbox. The
same cannot be said for the steady stream of "your email contained a virus"
mail which continues to pour in. Finding our real mail among all of the
virus notifications has become a bit of a challenge.
The thing is, of course, that we have not sent infected mail to anybody.
Honest. Neither have many of the other people who have gotten these
notifications. The software sending these notifications is working on the
assumption that email containing virulent malware will also be so polite as
to contain a
correct return address. SoBig is far from the first infestation which
forges return addresses, and it will certainly not be the last.
If virus notification email ever served a purpose, it has long since
outlived it. Virus/worm scanning software has its place in organizations
which are running vulnerable software, but as soon as it starts sending
mail to addresses found in hostile mail, it becomes part of the problem.
If you have anything to do with the development, deployment, or
administration of such software, please consider turning the notification
feature off.
Comments (21 posted)
New vulnerabilities
autorespond: buffer overflow
| Package(s): | autorespond |
CVE #(s): | CAN-2003-0654
|
| Created: | August 18, 2003 |
Updated: | October 1, 2003 |
| Description: |
Christian Jaeger discovered a buffer overflow in autorespond, an email
autoresponder used with qmail. This vulnerability could potentially
be exploited by a remote attacker to gain the privileges of a user who
has configured qmail to forward messages to autorespond. This
vulnerability is currently not believed to be exploitable due to
incidental limits on the length of the problematic input, but there
may be situations in which these limits do not apply.
CAN-2003-0654 |
| Alerts: |
|
Comments (none posted)
eroaster: insecure temporary file
| Package(s): | eroaster |
CVE #(s): | CAN-2003-0656
|
| Created: | August 19, 2003 |
Updated: | October 1, 2003 |
| Description: |
A vulnerability was discovered in eroaster where it does not take any
security precautions when creating a temporary file for the lockfile. This
vulnerability could be exploited to overwrite arbitrary files with the
privileges of the user running eroaster.
CAN-2003-0656 |
| Alerts: |
|
Comments (none posted)
netris: buffer overflow
| Package(s): | netris |
CVE #(s): | CAN-2003-0685
|
| Created: | August 18, 2003 |
Updated: | October 1, 2003 |
| Description: |
Shaun Colley discovered a buffer overflow vulnerability in netris, a
network version of a popular puzzle game. A netris client connecting
to an untrusted netris server could be sent an unusually long data
packet, which would be copied into a fixed-length buffer without
bounds checking. This vulnerability could be exploited to gain the
priviliges of the user running netris in client mode, if they connect
to a hostile netris server.
CAN-2003-0685 |
| Alerts: |
|
Comments (none posted)
openslp: temporary file creation vulnerability
| Package(s): | openslp |
CVE #(s): | |
| Created: | August 18, 2003 |
Updated: | August 20, 2003 |
| Description: |
According to this
advisory there's a symbolic link vulnerability in one of the
initscripts provided with openslp. The slpd.all_init file uses
'/tmp/route.check' as a temporarily file in an unsafe manner. |
| 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)
atari800: buffer overflows
| Package(s): | atari800 |
CVE #(s): | CAN-2003-0630
|
| Created: | August 1, 2003 |
Updated: | September 2, 2003 |
| Description: |
Steve Kemp discovered multiple buffer overflows in atari800, an Atari
emulator. In order to directly access graphics hardware, one of the
affected programs is setuid root. A local attacker could exploit this
vulnerability to gain root privileges. |
| 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)
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)
gallery: cross-site scripting
| Package(s): | gallery |
CVE #(s): | CAN-2003-0614
|
| Created: | July 31, 2003 |
Updated: | September 2, 2003 |
| Description: |
Larry Nguyen discovered a cross site scripting vulnerability in gallery,
a web-based photo album written in php. This security flaw can allow a
malicious user to craft a URL that executes Javascript code on your
website. |
| Alerts: |
|
Comments (none 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)
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-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)
man-db: buffer overflow, command execution
| Package(s): | man-db |
CVE #(s): | CAN-2003-0620
CAN-2003-0645
|
| Created: | August 5, 2003 |
Updated: | August 18, 2003 |
| Description: |
man-db 2.4.1 and earlier contains two separate vulnerabilities. There are several buffer overflows which could perhaps be locally exploited, and some directives in ~/.manpath are executed when they should not be. These vulnerabilities only matter if the package has been installed in the setuid mode. |
| 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)
pam-pgsql: format string vulnerability
| Package(s): | pam-pgsql |
CVE #(s): | CAN-2003-0672
|
| Created: | August 11, 2003 |
Updated: | October 1, 2003 |
| Description: |
Florian Zumbiehl reported a vulnerability in pam-pgsql whereby the
username to be used for authentication is used as a format string when
writing a log message. This vulnerability may allow an attacker to
execute arbitrary code with the privileges of the program requesting
PAM authentication.
CAN-2003-0672 |
| 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)
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)
postfix: denial of service vulnerabilities
| Package(s): | postfix |
CVE #(s): | CAN-2003-0468
CAN-2003-0540
|
| Created: | August 5, 2003 |
Updated: | May 27, 2004 |
| Description: |
The postfix MTA, versions through 1.1.12 (but not 2.0) is subject to two remotely exploitable denial of service vulnerabilities; see this advisory from Michal Zalewski for details. |
| 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)
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)
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)
wget: buffer overflow
| Package(s): | wget |
CVE #(s): | CAN-2003-1565
|
| Created: | August 5, 2003 |
Updated: | December 10, 2003 |
| Description: |
The wget utility contains a buffer overflow which, when exploited with an over-long URL, can enable arbitrary code execution. |
| Alerts: |
|
Comments (1 posted)
wu-ftpd: off-by-one bug
| Package(s): | wu-ftpd |
CVE #(s): | CAN-2003-0466
|
| Created: | July 31, 2003 |
Updated: | October 5, 2003 |
| Description: |
An off-by-one bug has been discovered in versions of wu-ftpd up to and
including 2.6.2. On a vulnerable system, a remote attacker would be able
to exploit this bug to gain root privileges. See this advisory for more details. |
| 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)
xpcd: buffer overflow
| Package(s): | xpcd |
CVE #(s): | CAN-2003-0649
|
| Created: | August 13, 2003 |
Updated: | August 13, 2003 |
| Description: |
The xpcd utility contains a buffer overflow which can be exploited via over-long environment variables. |
| Alerts: |
|
Comments (none posted)
zblast: buffer overflow
| Package(s): | zblast |
CVE #(s): | CAN-2003-0613
|
| Created: | August 11, 2003 |
Updated: | October 1, 2003 |
| Description: |
Steve Kemp discovered a buffer overflow in zblast-svgalib, when saving
the high score file. This vulnerability could be exploited by a local
user to gain gid 'games', if they can achieve a high score.
CAN-2003-0613 |
| Alerts: |
|
Comments (1 posted)
Resources
Bruce Schneier's CRYPTO-GRAM newsletter for August is out. It looks at
airline security silliness, hidden text in documents, and Bruce's new
book. " If I can name one overarching goal of the book, it's to explain how we
all can make ourselves safer by thinking of security not in absolutes,
but in terms of trade-offs -- the inevitable expenses, inconveniences,
and diminished freedoms we accept (or have forced on us) in the name of
enhanced security."
Full Story (comments: none)
CERT has issued an advisory on the compromise of the GNU FTP server.
" Because this system serves as a centralized archive of
popular
software, the insertion of malicious code into the distributed
software is a serious threat. As the above announcement indicates,
however, no source code distributions are believed to have been
maliciously modified at this time"
Full Story (comments: none)
The latest Linux Advisory Watch and Linux Security Week newsletters from
LinuxSecurity.com are available.
Comments (none posted)
Page editor: Jonathan Corbet
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