GLSA 200806-10: FreeType: User-assisted execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	FreeType: User-assisted execution of arbitrary code
Date:	06/23/2008
Bugs:	#225851
ID:	200806-10

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	Architecture(s)
media-libs/freetype	< 2.3.6	>= 2.3.6	All supported architectures

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

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@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.