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enscript: User-assisted execution of arbitrary code



enscript: User-assisted execution of arbitrary code
enscript: User-assisted execution of arbitrary code



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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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