RHSA-2004:479 - Security Advisory

Topic

Updated XFree86 packages that fix several security issues in libXpm, as
well as other bug fixes, are now available for Red Hat Enterprise Linux 2.1.

Description

XFree86 is an open source implementation of the X Window System. It
provides the basic low level functionality which full fledged graphical
user interfaces (GUIs) such as GNOME and KDE are designed upon.

During a source code audit, Chris Evans discovered several stack overflow
flaws and an integer overflow flaw in the X.Org libXpm library used to
decode XPM (X PixMap) images. An attacker could create a carefully crafted
XPM file which would cause an application to crash or potentially execute
arbitrary code if opened by a victim. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the names CAN-2004-0687,
CAN-2004-0688, and CAN-2004-0692 to these issues.

These packages also contain a bug fix to lower the RGB output voltage on
Dell servers using the ATI Radeon 7000m card.

Users are advised to upgrade to these erratum packages which contain
backported patches to correct these issues.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise/

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 - 129797 - Radeon driver (7000m) TVDAC output too high for DELL Server
• BZ - 131121 - CAN-2004-0687/8 libXpm stack and integer overflows.

CVEs

• CVE-2004-0688
• CVE-2004-0687

References

(none)