RHSA-2009:1062 - Security Advisory

Topic

Updated freetype packages that fix various security issues are now
available for Red Hat Enterprise Linux 2.1.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

Description

FreeType is a free, high-quality, portable font engine that can open and
manage font files. It also loads, hints, and renders individual glyphs
efficiently. These packages provide both the FreeType 1 and FreeType 2
font engines.

Tavis Ormandy of the Google Security Team discovered several integer
overflow flaws in the FreeType 2 font engine. If a user loaded a
carefully-crafted font file with an application linked against FreeType 2,
it could cause the application to crash or, possibly, execute arbitrary
code with the privileges of the user running the application.
(CVE-2009-0946)

Chris Evans discovered multiple integer overflow flaws in the FreeType font
engine. If a user loaded a carefully-crafted font file with an application
linked against FreeType, it could cause the application to crash or,
possibly, execute arbitrary code with the privileges of the user running
the application. (CVE-2006-1861)

An integer overflow flaw was found in the way the FreeType font engine
processed TrueType® Font (TTF) files. If a user loaded a carefully-crafted
font file with an application linked against FreeType, it could cause the
application to crash or, possibly, execute arbitrary code with the
privileges of the user running the application. (CVE-2007-2754)

Note: For the FreeType 2 font engine, the CVE-2006-1861 and CVE-2007-2754
flaws were addressed via RHSA-2006:0500 and RHSA-2007:0403 respectively.
This update provides corresponding updates for the FreeType 1 font engine,
included in the freetype packages distributed in Red Hat Enterprise Linux
2.1.

Users are advised to upgrade to these updated packages, which contain
backported patches to correct these issues. The X server must be restarted
(log out, then log back in) for this update to take effect.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 2 ia64
• Red Hat Enterprise Linux Server 2 i386
• Red Hat Enterprise Linux Workstation 2 ia64
• Red Hat Enterprise Linux Workstation 2 i386

Fixes

• BZ - 484437 - CVE-2006-1861 freetype: multiple integer overflow vulnerabilities
• BZ - 491384 - CVE-2009-0946 freetype: multiple integer overflows

CVEs

• CVE-2009-0946

References

(none)