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Gentoo Linux Security Advisory 200804-18

Gentoo Linux Security Advisory 200804-18
Posted Apr 17, 2008
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory GLSA 200804-18:02 - 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. Versions less than 0.6.3 are affected.

tags | advisory
systems | linux, gentoo, ubuntu
advisories | CVE-2008-1693
SHA-256 | ae9a60cc3da4430f6ca0967bccd1d1da37676c2acea84b5f512ec8df953eb6b5

Gentoo Linux Security Advisory 200804-18

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Gentoo Linux Security Advisory GLSA 200804-18:02
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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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