RHSA-2010:0578 - Security Advisory

Topic

Updated freetype packages that fix various security issues are now
available for Red Hat Enterprise Linux 4 and 5.

The Red Hat Security Response Team has rated this update as having
important security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

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. The freetype packages for Red Hat Enterprise Linux 4 provide
both the FreeType 1 and FreeType 2 font engines. The freetype packages for
Red Hat Enterprise Linux 5 provide only the FreeType 2 font engine.

An invalid memory management flaw was found in the way the FreeType font
engine processed font 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-2010-2498)

An integer overflow flaw was found in the way the FreeType font engine
processed font 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-2010-2500)

Several buffer overflow flaws were found in the way the FreeType font
engine processed font 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-2010-2499, CVE-2010-2519)

Several buffer overflow flaws were found in the FreeType demo applications.
If a user loaded a carefully-crafted font file with a demo application, it
could cause the application to crash or, possibly, execute arbitrary code
with the privileges of the user running the application. (CVE-2010-2527,
CVE-2010-2541)

Red Hat would like to thank Robert Swiecki of the Google Security Team for
the discovery of the CVE-2010-2498, CVE-2010-2500, CVE-2010-2499,
CVE-2010-2519, and CVE-2010-2527 issues.

Note: All of the issues in this erratum only affect the FreeType 2 font
engine.

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 all previously-released errata
relevant to your system have been applied.

This update is available via the 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 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Server 4 x86_64
• Red Hat Enterprise Linux Server 4 ia64
• Red Hat Enterprise Linux Server 4 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.8 ia64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.8 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Workstation 4 x86_64
• Red Hat Enterprise Linux Workstation 4 ia64
• Red Hat Enterprise Linux Workstation 4 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for IBM z Systems 4 s390x
• Red Hat Enterprise Linux for IBM z Systems 4 s390
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.8 s390
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux for Power, big endian 4 ppc
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 4.8 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 613160 - CVE-2010-2498 freetype: invalid free vulnerability with possible heap corruption
• BZ - 613162 - CVE-2010-2499 freetype: buffer overflow vulnerability
• BZ - 613167 - CVE-2010-2500 freetype: integer overflow vulnerability in smooth/ftgrays.c
• BZ - 613194 - CVE-2010-2519 freetype: heap buffer overflow vulnerability when processing certain font files
• BZ - 614557 - CVE-2010-2527 Freetype demos multiple buffer overflows
• BZ - 617342 - CVE-2010-2541 Freetype ftmulti buffer overflow

CVEs

• CVE-2010-2527
• CVE-2010-2500
• CVE-2010-2541
• CVE-2010-2519
• CVE-2010-2499
• CVE-2010-2498

References

• http://www.redhat.com/security/updates/classification/#important