[gentoo-announce] [ GLSA 200806-10 ] FreeType: User-assisted execution of arbitrary code

[news 28]

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Gentoo Linux Security Advisory GLSA 200806-10

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http://security.gentoo.org/

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Severity: Normal

Title: FreeType: User-assisted execution of arbitrary code

Date: June 23, 2008

Bugs: #225851

ID: 200806-10

 

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Synopsis

========

 

Font parsing vulnerabilities in FreeType might lead to user-assisted

execution of arbitrary code.

 

Background

==========

 

FreeType is a font rendering library for TrueType Font (TTF) and

Printer Font Binary (PFB).

 

Affected packages

=================

 

-------------------------------------------------------------------

Package / Vulnerable / Unaffected

-------------------------------------------------------------------

1 media-libs/freetype < 2.3.6 >= 2.3.6

 

Description

===========

 

Regenrecht reported multiple vulnerabilities in FreeType via iDefense:

 

* An integer overflow when parsing values in the Private dictionary

table in a PFB file, leading to a heap-based buffer overflow

(CVE-2008-1806).

 

* An invalid free() call related to parsing an invalid "number of

axes" field in a PFB file (CVE-2008-1807).

 

* Multiple off-by-one errors when parsing PBF and TTF files, leading

to heap-based buffer overflows (CVE-2008-1808).

 

Impact

======

 

A remote attacker could entice a user to open a specially crafted TTF

or PBF file, possibly resulting in the execution of arbitrary code with

the privileges of the user running an application linked against

FreeType (such as the X.org X server, running as root).

 

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 ">=media-libs/freetype-2.3.6"

 

References

==========

 

[ 1 ] CVE-2008-1806

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1806

[ 2 ] CVE-2008-1807

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1807

[ 3 ] CVE-2008-1808

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1808

 

Availability

============

 

This GLSA and any updates to it are available for viewing at

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-200806-10.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 ( -at -) 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