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Gentoo: enscript User-assisted execution of arbitrary code Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   
Gentoo Two buffer overflows in enscript might lead to the 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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