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Gentoo Linux Security Advisory                           GLSA 200501-30
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  Severity: Normal
     Title: CUPS: Stack overflow in included Xpdf code
      Date: January 22, 2005
      Bugs: #78249
        ID: 200501-30

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Synopsis
========

CUPS includes Xpdf code and therefore is vulnerable to the recent stack
overflow issue, potentially resulting in the remote execution of
arbitrary code.

Background
==========

The Common UNIX Printing System (CUPS) is a cross-platform print
spooler. It makes use of Xpdf code to handle PDF files.

Affected packages
=================

    -------------------------------------------------------------------
     Package         /   Vulnerable   /                     Unaffected
    -------------------------------------------------------------------
  1  net-print/cups      < 1.1.23-r1                      >= 1.1.23-r1

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

The Decrypt::makeFileKey2 function in Xpdf's Decrypt.cc insufficiently
checks boundaries when processing /Encrypt /Length tags in PDF files
(GLSA 200501-28).

Impact
======

This issue could be exploited by a remote attacker to execute arbitrary
code by sending a malicious print job to a CUPS spooler.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All CUPS users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-print/cups-1.1.23-r1"

References
==========

  [ 1 ] CAN-2005-0064
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0064
  [ 2 ] GLSA 200501-28
        http://www.gentoo.org/security/en/glsa/glsa-200501-28.xml

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

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

  http://security.gentoo.org/glsa/glsa-200501-30.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 2005 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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