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Trustix Secure Linux Security Advisory #2006-0057
Package names: clamav, kernel, php, php4, python, xorg-x11
Summary: Multiple vulnerabilities
Date: 2006-10-18
Affected versions: Trustix Secure Linux 2.2
Trustix Secure Linux 3.0
Trustix Operating System - Enterprise Server 2
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Package description:
clamav
Clam AntiVirus is a GPL anti-virus toolkit for UNIX. The main purpose
of this software is the integration with mail servers (attachment
scanning). The package provides a flexible and scalable multi-threaded
daemon, a command line scanner, and a tool for automatic updating via
Internet. The programs are based on a shared library distributed with
package, which you can use with your own software. Most importantly,
the virus database is kept up to date .
kernel
The kernel package contains the Linux kernel (vmlinuz), the core of
your Trustix Secure Linux operating system. The kernel handles the
basic functions of the operating system: memory allocation, process
allocation, device input and output, etc.
php
PHP is an HTML-embedded scripting language. PHP attempts to
make it easy for developers to write dynamically generated web
pages. PHP also offers built-in database integration for several
commercial and non-commercial database management systems, so
writing a database-enabled web page with PHP is fairly simple.
The most common use of PHP coding is probably as a replacement
for CGI scripts. The mod_php module enables the Apache web server
to understand and process the embedded PHP language in web pages.
php4
PHP4 is an HTML-embedded scripting language. PHP4 attempts to
make it easy for developers to write dynamically generated web
pages. PHP4 also offers built-in database integration for several
commercial and non-commercial database management systems, so
writing a database-enabled web page with PHP is fairly simple.
The most common use of PHP coding is probably as a replacement
for CGI scripts. The mod_php module enables the Apache web server
to understand and process the embedded PHP language in web pages.
python
Python is an interpreted, interactive, object-oriented programming
language often compared to Tcl, Perl, Scheme or Java. Python includes
modules, classes, exceptions, very high level dynamic data types and
dynamic typing. Python supports interfaces to many system calls and
libraries.
xorg-x11
X.org X11 is an open source implementation of the X Window System.
It provides the basic low level functionality which full fledged
graphical user interfaces (GUIs) such as GNOME and KDE are designed
upon.
Problem description:
clamav < TSL 3.0 > < TSL 2.2 >
- New Upstream.
- SECURITY Fix: Two vulnerabilities have been reported in Clam
AntiVirus, which can be exploited by malicious people to cause
a DoS (SA22370).
- Fixes an unspecified error in the CHM unpacker in chmunpack.c which
can be exploited to cause a DoS.
- Fixes an unspecified error in rebuildpe.c when rebuilding PE files
after unpacking which can be exploited to cause a heap-based buffer
overflow.
kernel < TSL 2.2 >
- SECURITY Fix: A vulnerability has been reported in Linux Kernel,
caused due to an error in the "clip_mkip()" function in the ATM
subsystem and can be exploited to cause a kernel panic.
The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CVE-2006-4997 to this issue.
kernel < TSL 3.0 >
- New upstream.
- SECURITY FIX: A vulnerability has been identified due to an error
in the ULE (Unidirectional Lightweight Encapsulation) decapsulation
code [drivers/media/dvb/dvb-core/dvb_net.c] that does not properly
handle malformed packets with a SNDU (Sub Network Data Unit) length
of 0, which could be exploited by attackers to crash a vulnerable
system, creating a denial of service condition.
The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CVE-2006-4623 to this issue.
php < TSL 3.0 > < TSL 2.2 >
- SECURITY Fix: Maksymilian Arciemowicz has reported a vulnerability
in PHP, caused due to an error within the "ini_restore()" function,
which can be exploited to reset certain options to their default
value specified in php.ini.
The Common Vulnerabilities and Exposures project has assigned the
name CVE-2006-4625 to this issue.
php4 < TSL 2.2 >
- SECURITY Fix: Maksymilian Arciemowicz has reported a vulnerability
in PHP, caused due to an error within the "ini_restore()" function,
which can be exploited to reset certain options to their default
value specified in php.ini.
The Common Vulnerabilities and Exposures project has assigned the
name CVE-2006-4625 to this issue.
python < TSL 3.0 > < TSL 2.2 > < TSEL 2 >
- SECURITY FIX: Benjamin C. Wiley Sittler has reported a vulnerability
in Python caused due to incorrect handling of UTF32/UCS-4 encoded
strings within the "repr()" function. If an application uses the
"repr()" function to process attacker supplied data, this can
potentially be exploited to execute arbitrary code.
The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CVE-2006-4980 to this issue.
xorg-x11 < TSL 3.0 >
- Add patch to build against freetype 2.2.x.
- SECURITY Fix: Some vulnerabilities have been reported in libXfont,
which can be exploited by malicious, local users to gain escalated
privileges. The vulnerabilities are caused due to integer overflows
within the "scan_cid()" function when handling CMAP and CIDFont data
and the "CIDADM()" function when parsing AFM (Adobe Font Metric)
files. These can be exploited to cause buffer overflows via
specially crafted CID encoded Type1 fonts.
- Another security issues have been reported in X.Org X11, caused
due to missing checks whether the setuid() or similar calls have
succeeded. This can be exploited to perform certain actions with
root privileges if the calls fail due to e.g. resource limits.
- An integer overflow flaw in the way the X.org server processes PCF
files was discovered. This could be exploited to cause a denial of
service or potentially execute arbitrary code with root privileges
on the X.org server
The Common Vulnerabilities and Exposures project has assigned the
names CVE-2006-3740, CVE-2006-3739, CVE-2006-4447 and
CVE-2006-3467 to these issues.
Action:
We recommend that all systems with this package installed be upgraded.
Please note that if you do not need the functionality provided by this
package, you may want to remove it from your system.
Location:
All Trustix Secure Linux updates are available from
<URI:http://http.trustix.org/pub/trustix/updates/>
<URI:ftp://ftp.trustix.org/pub/trustix/updates/>
About Trustix Secure Linux:
Trustix Secure Linux is a small Linux distribution for servers. With focus
on security and stability, the system is painlessly kept safe and up to
date from day one using swup, the automated software updater.
Automatic updates:
Users of the SWUP tool can enjoy having updates automatically
installed using 'swup --upgrade'.
Questions?
Check out our mailing lists:
<URI:http://www.trustix.org/support/>
Verification:
This advisory along with all Trustix packages are signed with the
TSL sign key.
This key is available from:
<URI:http://www.trustix.org/TSL-SIGN-KEY>
The advisory itself is available from the errata pages at
<URI:http://www.trustix.org/errata/trustix-2.2/> and
<URI:http://www.trustix.org/errata/trustix-3.0/>
or directly at
<URI:http://www.trustix.org/errata/2006/0057/>
MD5sums of the packages:
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098cede5fa9ef74a536269b9d05b26bd 3.0/rpms/php-5.1.6-3tr.i586.rpm
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Trustix Security Team
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