full-disclosure - [ GLSA 200410-20 ] Xpdf, CUPS: Multiple integer overflows

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From: koon at gentoo.org (Thierry Carrez)
Subject: [ GLSA 200410-20 ] Xpdf, CUPS: Multiple integer overflows

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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@...too.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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