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[ GLSA 200410-20 ] Xpdf, CUPS: Multiple integer overflows
From: Thierry Carrez <koon () gentoo org>
Date: Thu, 21 Oct 2004 16:40:08 +0200

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Gentoo Linux Security Advisory                           GLSA 200410-20
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Xpdf, CUPS: Multiple integer overflows
      Date: October 21, 2004
        ID: 200410-20

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Synopsis
========

Multiple integer overflows were discovered in Xpdf, potentially
resulting in execution of arbitrary code upon viewing a malicious PDF
file. CUPS includes Xpdf code and therefore is vulnerable to the same
issues.

Background
==========

Xpdf is an open source viewer for Portable Document Format (PDF) files.
The Common UNIX Printing System (CUPS) is a cross-platform print
spooler that includes some Xpdf code.

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

    -------------------------------------------------------------------
     Package         /   Vulnerable   /                     Unaffected
    -------------------------------------------------------------------
  1  app-text/xpdf       <= 3.00-r2                         >= 3.00-r3
  2  net-print/cups     <= 1.1.20-r3                      >= 1.1.20-r4
    -------------------------------------------------------------------
     2 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

Chris Evans discovered multiple integer overflow issues in Xpdf.

Impact
======

An attacker could entice an user to open a specially-crafted PDF file,
potentially resulting in execution of arbitrary code with the rights of
the user running Xpdf. By enticing an user to directly print the PDF
file to a CUPS printer, an attacker could also crash the CUPS spooler
or execute arbitrary code with the rights of the CUPS spooler, which is
usually the "lp" user.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Xpdf users should upgrade to the latest version:

    # emerge sync

    # emerge -pv ">=app-text/xpdf-3.00-r3"
    # emerge ">=app-text/xpdf-3.00-r3"

All CUPS users should also upgrade to the latest version:

    # emerge sync

    # emerge -pv ">=net-print/cups-1.1.20-r4"
    # emerge ">=net-print/cups-1.1.20-r4"

References
==========

  [ 1 ] CAN-2004-0888
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0888
  [ 2 ] CAN-2004-0889
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0889

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

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

  http://security.gentoo.org/glsa/glsa-200410-20.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 2004 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/1.0

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