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Gentoo Linux Security Advisory                           GLSA 200601-14
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                                            https://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:

  https://security.gentoo.org/glsa/200601-14

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
https://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.

https://creativecommons.org/licenses/by-sa/2.0/