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[ GLSA 200804-18 ] Poppler: User-assisted execution of arbitrary code
From: Robert Buchholz <rbu () gentoo org>
Date: Thu, 17 Apr 2008 14:34:28 +0200

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Gentoo Linux Security Advisory                        GLSA 200804-18:02
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Poppler: User-assisted execution of arbitrary code
      Date: April 17, 2008
   Updated: April 17, 2008
      Bugs: #216850
        ID: 200804-18:02

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Synopsis
========

Poppler does not handle fonts inside PDF files safely, allowing for
execution of arbitrary code.

Background
==========

Poppler is a cross-platform PDF rendering library originally based on
Xpdf.

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

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  app-text/poppler       < 0.6.3                           >= 0.6.3

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

Kees Cook from the Ubuntu Security Team reported that the
CairoFont::create() function in the file CairoFontEngine.cc does not
verify the type of an embedded font object inside a PDF file before
dereferencing a function pointer from it.

Impact
======

A remote attacker could entice a user to open a specially crafted PDF
file with a Poppler-based PDF viewer such as Gentoo's Xpdf, Epdfview,
or Evince, potentially resulting in the execution of arbitrary code
with the privileges of the user running the application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Poppler users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/poppler-0.6.3"

References
==========

  [ 1 ] CVE-2008-1693
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1693

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

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

  http://security.gentoo.org/glsa/glsa-200804-18.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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