[ GLSA 200508-08 ] Xpdf, Kpdf, GPdf: Denial of Service vulnerability

[Sune Kloppenborg Jeppesen <jaervosz () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200508-08
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Xpdf, Kpdf, GPdf: Denial of Service vulnerability
      Date: August 16, 2005
      Bugs: #99769, #100263, #100265
        ID: 200508-08

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Synopsis
========

Xpdf, Kpdf and GPdf may crash as a result of a Denial of Service
vulnerability.

Background
==========

Xpdf, Kpdf and GPdf are PDF file viewers that run under the X Window
System. Kpdf and GPdf both contain Xpdf code. Kpdf is also part of
kdegraphics.

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

    -------------------------------------------------------------------
     Package               /   Vulnerable   /               Unaffected
    -------------------------------------------------------------------
  1  app-text/xpdf             < 3.00-r10                  >= 3.00-r10
  2  kde-base/kdegraphics      < 3.3.2-r3                  >= 3.3.2-r3
  3  kde-base/kpdf             < 3.4.1-r1                  >= 3.4.1-r1
  4  app-text/gpdf             < 2.10.0-r1                >= 2.10.0-r1
    -------------------------------------------------------------------
     4 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

Xpdf, Kpdf and GPdf do not handle a broken table of embedded TrueType
fonts correctly. After detecting such a table, Xpdf, Kpdf and GPdf
attempt to reconstruct the information in it by decoding the PDF file,
which causes the generation of a huge temporary file.

Impact
======

A remote attacker may cause a Denial of Service by creating a specially
crafted PDF file, sending it to a CUPS printing system (which uses
Xpdf), or by enticing a user to open it in Xpdf, Kpdf, or GPdf.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Xpdf users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/xpdf-3.00-r10"

All GPdf users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/gpdf-2.10.0-r1"

All Kpdf users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=kde-base/kdegraphics-3.3.2-r3"

All KDE Split Ebuild Kpdf users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=kde-base/kpdf-3.4.1-r1"

References
==========

  [ 1 ] CAN-2005-2097
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2097

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

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

  http://security.gentoo.org/glsa/glsa-200508-08.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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