RHSA-2006:0500 - Security Advisory

Topic

Updated freetype packages that fix several security flaws are now available
for Red Hat Enterprise Linux.

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

Description

FreeType is a free, high-quality, and portable font engine.

Chris Evans discovered several integer underflow and overflow flaws in the
FreeType font engine. If a user loads a carefully crafted font file with a
program linked against FreeType, it could cause the application to crash or
execute arbitrary code as the user. While it is uncommon for a user to
explicitly load a font file, there are several application file formats
which contain embedded fonts that are parsed by FreeType. (CVE-2006-0747,
CVE-2006-1861, CVE-2006-3467)

A NULL pointer dereference flaw was found in the FreeType font engine. An
application linked against FreeType can crash upon loading a malformed font
file. (CVE-2006-2661)

Users of FreeType should upgrade to these updated packages, which contain
backported patches to correct these issues.

Solution

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

This update is available via Red Hat Network. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

Affected Products

• 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 Server 3 x86_64
• Red Hat Enterprise Linux Server 3 ia64
• Red Hat Enterprise Linux Server 3 i386
• Red Hat Enterprise Linux Server 2 ia64
• Red Hat Enterprise Linux Server 2 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 Workstation 3 x86_64
• Red Hat Enterprise Linux Workstation 3 ia64
• Red Hat Enterprise Linux Workstation 3 i386
• Red Hat Enterprise Linux Workstation 2 ia64
• Red Hat Enterprise Linux Workstation 2 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 i386
• Red Hat Enterprise Linux Desktop 3 x86_64
• Red Hat Enterprise Linux Desktop 3 i386
• 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 3 s390x
• Red Hat Enterprise Linux for IBM z Systems 3 s390
• Red Hat Enterprise Linux for Power, big endian 4 ppc
• Red Hat Enterprise Linux for Power, big endian 3 ppc

Fixes

• BZ - 183676 - CVE-2006-0747 Freetype integer underflow (CVE-2006-2661)
• BZ - 190593 - CVE-2006-1861 freetype multiple integer overflows (CVE-2006-3467)

CVEs

• CVE-2006-0747
• CVE-2006-1861
• CVE-2006-3467
• CVE-2006-2661

References

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