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GNU TeXmacs: Privilege escalation

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201401-27 / texmacs
Release Date January 26, 2014
Latest Revision January 26, 2014: 2
Impact high
Exploitable local
Package Vulnerable versions Unaffected versions Architecture(s)
app-office/texmacs < 1.0.7.2-r1 >= 1.0.7.2-r1 All supported architectures

Related bugreports: #337532

Synopsis

A vulnerability in GNU TeXmacs could result in privilege escalation.

2.  Impact Information

Background

GNU TeXmacs is a free WYSIWYG editing platform with special features for scientists.

Description

The texmacs and tm_mupad_help scripts in TeXmacs place a zero-length directory name in the LD_LIBRARY_PATH, which might result in the current working directory (.) to be included when searching for dynamically linked libraries.

Impact

A local attacker could gain escalated privileges via a specially crafted shared library.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All GNU TeXmacs users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-office/texmacs-1.0.7.2-r1"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since April 02, 2011. It is likely that your system is already no longer affected by this issue.

4.  References



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Page updated January 26, 2014

Summary: This is a Gentoo Linux Security Advisory

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