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Sicherheit: Zahlenüberläufe in FreeType
Aktuelle Meldungen Distributionen
Name: Zahlenüberläufe in FreeType
ID: 200905-05
Distribution: Gentoo
Plattformen: Keine Angabe
Datum: So, 24. Mai 2009, 20:08
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0946
Applikationen: Freetype

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Gentoo Linux Security Advisory GLSA 200905-05
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http://security.gentoo.org/
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Severity: Normal
Title: FreeType: Multiple vulnerabilities
Date: May 24, 2009
Bugs: #263032
ID: 200905-05

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Synopsis
========

Multiple integer overflows in FreeType might allow for the remote
execution of arbitrary code or a Denial of Service.

Background
==========

FreeType is a high-quality and portable font engine.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/freetype < 2.3.9-r1 >=3D 2.3.9-r1

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

Tavis Ormandy reported multiple integer overflows in the
cff_charset_compute_cids() function in cff/cffload.c, sfnt/tccmap.c and
the ft_smooth_render_generic() function in smooth/ftsmooth.c, possibly
leading to heap or stack-based buffer overflows.

Impact
======

A remote attacker could entice a user or automated system to open a
specially crafted font file, possibly resulting in the execution of
arbitrary code with the privileges of the user running the application,
or a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All FreeType users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=3Dmedia-libs/freetype-2.3.9-r1"

References
==========

[ 1 ] CVE-2009-0946
http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2009-0946

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

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

http://security.gentoo.org/glsa/glsa-200905-05.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 2009 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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