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Gentoo Linux Security Advisory GLSA 200601-14
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http://security.gentoo.org/
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Severity: High
Title: LibAST: Privilege escalation
Date: January 29, 2006
Bugs: #120106
ID: 200601-14
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Synopsis
========
A buffer overflow in LibAST may result in execution of arbitrary code
with escalated privileges.
Background
==========
LibAST is a utility library that was originally intended to accompany
Eterm, but may be used by various other applications.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 x11-libs/libast < 0.7 >= 0.7
Description
===========
Michael Jennings discovered an exploitable buffer overflow in the
configuration engine of LibAST.
Impact
======
The vulnerability can be exploited to gain escalated privileges if the
application using LibAST is setuid/setgid and passes a specifically
crafted filename to LibAST's configuration engine.
Workaround
==========
Identify all applications linking against LibAST and verify they are
not setuid/setgid.
Resolution
==========
All users should upgrade to the latest version and run revdep-rebuild:
# emerge --sync
# emerge --ask --oneshot --verbose >=x11-libs/libast-0.7
# revdep-rebuild
References
==========
[ 1 ] CVE-2006-0224
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0224
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200601-14.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 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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