teTeX, pTeX, CSTeX: Multiple overflows in included XPdf code

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200603-02 / tetex
Release Date	March 04, 2006
Latest Revision	March 04, 2006: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-text/tetex	< 2.0.2-r8	>= 2.0.2-r8	All supported architectures
app-text/cstetex	< 2.0.2-r2	>= 2.0.2-r2	All supported architectures
app-text/ptex	< 3.1.5-r1	>= 3.1.5-r1	All supported architectures

Related bugreports: #115775

Synopsis

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

2. Impact Information

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.

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.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All teTex users should upgrade to the latest version:

Code Listing 3.1: Resolution

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

All CSTeX users should upgrade to the latest version:

Code Listing 3.2: Resolution

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

All pTeX users should upgrade to the latest version:

Code Listing 3.3: Resolution

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

4. References

Updated March 04, 2006

Summary: This is a Gentoo Linux Security Advisory

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