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Gentoo Linux Security Advisory 200812-2

Gentoo Linux Security Advisory 200812-2
Posted Dec 2, 2008
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory GLSA 200812-02 - Two buffer overflows in enscript might lead to the execution of arbitrary code. Two stack-based buffer overflows in the read_special_escape() function in src/psgen.c have been reported. Ulf Harnhammar of Secunia Research discovered a vulnerability related to the setfilename command (CVE-2008-3863), and Kees Cook of Ubuntu discovered a vulnerability related to the font escape sequence (CVE-2008-4306). Versions less than 1.6.4-r4 are affected.

tags | advisory, overflow, arbitrary
systems | linux, gentoo, ubuntu
advisories | CVE-2008-3863, CVE-2008-4306
SHA-256 | 8cbd0e0780d7c5ffd3c6367c7776e0d6e14aa37279c75668c254b97bf5515cbf

Gentoo Linux Security Advisory 200812-2

Change Mirror Download
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Gentoo Linux Security Advisory GLSA 200812-02
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http://security.gentoo.org/
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Severity: Normal
Title: enscript: User-assisted execution of arbitrary code
Date: December 02, 2008
Bugs: #243228
ID: 200812-02

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Synopsis
========

Two buffer overflows in enscript might lead to the execution of
arbitrary code.

Background
==========

enscript is a powerful ASCII to PostScript file converter.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-text/enscript < 1.6.4-r4 >= 1.6.4-r4

Description
===========

Two stack-based buffer overflows in the read_special_escape() function
in src/psgen.c have been reported. Ulf Harnhammar of Secunia Research
discovered a vulnerability related to the "setfilename" command
(CVE-2008-3863), and Kees Cook of Ubuntu discovered a vulnerability
related to the "font" escape sequence (CVE-2008-4306).

Impact
======

An attacker could entice a user or automated system to process
specially crafted input with the special escapes processing enabled
using the "-e" option, possibly resulting in the execution of arbitrary
code.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All enscript users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/enscript-1.6.4-r4"

References
==========

[ 1 ] CVE-2008-3863
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3863
[ 2 ] CVE-2008-4306
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4306

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200812-02.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 2008 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/2.5
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