A new security update has been released for Gentoo Linux - CSTeX: Multiple vulnerabilities. Here the announcement:

Gentoo Linux Security Advisory GLSA 200711-34
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http://security.gentoo.org/
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Severity: Normal
Title: CSTeX: Multiple vulnerabilities
Date: November 25, 2007
Bugs: #196673
ID: 200711-34

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Synopsis
========

Multiple vulnerabilities were discovered in CSTeX, possibly allowing to
execute arbitrary code or overwrite arbitrary files.

Background
==========

CSTeX is a TeX distribution with Czech and Slovak support. It is used
for creating and manipulating LaTeX documents.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-text/cstetex < 2.0.2-r2 Vulnerable!
-------------------------------------------------------------------
NOTE: Certain packages are still vulnerable. Users should migrate
to another package if one is available or wait for the
existing packages to be marked stable by their
architecture maintainers.
-------------------------------------------------------------------
-------------------------------------------------------------------
NOTE: Packages marked with asterisks require manual intervention!

Description
===========

Multiple issues were found in the teTeX 2 codebase that CSTeX builds
upon (GLSA 200709-17, GLSA 200711-26). CSTeX also includes vulnerable
code from the GD library (GLSA 200708-05), from Xpdf (GLSA 200709-12,
GLSA 200711-22) and from T1Lib (GLSA 200710-12).

Impact
======

Remote attackers could possibly execute arbitrary code and local
attackers could possibly overwrite arbitrary files with the privileges
of the user running CSTeX via multiple vectors.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

CSTeX is not maintained upstream, so the package was masked in Portage.
We recommend that users unmerge CSTeX:

# emerge --unmerge app-text/cstetex

As an alternative, users should upgrade their systems to use teTeX or
TeX Live with its Babel packages.

References
==========

[ 1 ] GLSA 200708-05
http://www.gentoo.org/security/en/glsa/glsa-200708-05.xml
[ 2 ] GLSA 200709-12
http://www.gentoo.org/security/en/glsa/glsa-200709-12.xml
[ 3 ] GLSA 200709-17
http://www.gentoo.org/security/en/glsa/glsa-200709-17.xml
[ 4 ] GLSA 200710-12
http://www.gentoo.org/security/en/glsa/glsa-200710-12.xml
[ 5 ] GLSA 200711-22
http://www.gentoo.org/security/en/glsa/glsa-200711-22.xml
[ 6 ] GLSA 200711-26
http://www.gentoo.org/security/en/glsa/glsa-200711-26.xml

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200711-34.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2007 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5