bugtraq - [ GLSA 200603-02 ] teTeX, pTeX, CSTeX: Multiple overflows in included XPdf code

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Date: Sat, 04 Mar 2006 17:32:34 +0100
From: Thierry Carrez <koon@...too.org>
To: gentoo-announce@...ts.gentoo.org
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200603-02 ] teTeX, pTeX,
 CSTeX: Multiple overflows in included XPdf code

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Gentoo Linux Security Advisory                           GLSA 200603-02
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: teTeX, pTeX, CSTeX: Multiple overflows in included XPdf
            code
      Date: March 04, 2006
      Bugs: #115775
        ID: 200603-02

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Synopsis
========

CSTeTeX, pTeX, and teTeX include vulnerable XPdf code to handle PDF
files, making them vulnerable to the execution of arbitrary code.

Background
==========

teTex is a complete TeX distribution. It is used for creating and
manipulating LaTeX documents. CSTeX is a TeX distribution with Czech
and Slovak support. pTeX is and ASCII publishing TeX distribution.

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

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  app-text/tetex       < 2.0.2-r8                       >= 2.0.2-r8
  2  app-text/cstetex     < 2.0.2-r2                       >= 2.0.2-r2
  3  app-text/ptex        < 3.1.5-r1                       >= 3.1.5-r1
    -------------------------------------------------------------------
     3 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

CSTeX, teTex, and pTeX include XPdf code to handle PDF files. This XPdf
code is vulnerable to several heap overflows (GLSA 200512-08) as well
as several buffer and integer overflows discovered by Chris Evans
(CESA-2005-003).

Impact
======

An attacker could entice a user to open a specially crafted PDF file
with teTeX, pTeX or CSTeX, potentially resulting in the execution of
arbitrary code with the rights of the user running the affected
application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All teTex users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/tetex-2.0.2-r8"

All CSTeX users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/cstetex-2.0.2-r2"

All pTeX users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/ptex-3.1.5-r1"

References
==========

  [ 1 ] CVE-2005-3193
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-3193
  [ 2 ] GLSA 200512-08
        http://www.gentoo.org/security/en/glsa/glsa-200512-08.xml
  [ 3 ] CESA-2005-003
        http://scary.beasts.org/security/CESA-2005-003.txt

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

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

  http://security.gentoo.org/glsa/glsa-200603-02.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@...too.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2006 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/2.0

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