teTeX: Multiple buffer overflows

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200709-17 / tetex
Release Date	September 27, 2007
Latest Revision	September 27, 2007: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-text/tetex	< 3.0_p1-r4	>= 3.0_p1-r4	All supported architectures

Related bugreports: #170861, #182055, #188172

Synopsis

Multiple vulnerabilities have been discovered in teTeX, allowing for user-assisted execution of arbitrary code.

2. Impact Information

Background

teTeX is a complete TeX distribution for editing documents.

Description

Mark Richters discovered a buffer overflow in the open_sty() function in file mkind.c. Other vulnerabilities have also been discovered in the same file but might not be exploitable (CVE-2007-0650). Tetex also includes vulnerable code from GD library (GLSA 200708-05), and from Xpdf (CVE-2007-3387).

Impact

A remote attacker could entice a user to process a specially crafted PNG, GIF or PDF file, or to execute "makeindex" on an overly long filename. In both cases, this could lead to the remote execution of arbitrary code with the privileges of the user running the 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-3.0_p1-r4"

4. References

Page updated September 27, 2007

Summary: This is a Gentoo Linux Security Advisory

Security Team
Contact Address

Donate to support our development efforts.