RHSA-2005:066 - Security Advisory

Topic

Updated kdegraphics packages that resolve security issues in kpdf are now
available.

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

Description

The kdegraphics packages contain applications for the K Desktop Environment
including kpdf, a pdf file viewer.

A buffer overflow flaw was found in the Gfx::doImage function of Xpdf that
also affects kpdf due to a shared codebase. An attacker could construct a
carefully crafted PDF file that could cause kpdf to crash or possibly
execute arbitrary code when opened. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CAN-2004-1125 to
this issue.

A buffer overflow flaw was found in the Decrypt::makeFileKey2 function of
Xpdf which also affects kpdf due to a shared codebase. An attacker could
construct a carefully crafted PDF file that could cause kpdf to crash or
possibly execute arbitrary code when opened. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CAN-2005-0064 to
this issue.

During a source code audit, Chris Evans and others discovered a number of
integer overflow bugs that affected all versions of Xpdf which also affects
kpdf due to a shared codebase. An attacker could construct a carefully
crafted PDF file that could cause kpdf to crash or possibly execute
arbitrary code when opened. The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the name CAN-2004-0888 to this issue.

Users should update 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 4 x86_64
• Red Hat Enterprise Linux Server 4 ia64
• Red Hat Enterprise Linux Server 4 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 4 x86_64
• Red Hat Enterprise Linux Desktop 4 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 Power, big endian 4 ppc

Fixes

• BZ - 144231 - CAN-2004-1125 kpdf buffer overflows (CAN-2005-0064)
• BZ - 147517 - CAN-2004-0888 xpdf integer overflows

CVEs

• CVE-2004-0888
• CVE-2004-1125
• CVE-2005-0064

References

• http://www.kde.org/info/security/advisory-20041223-1.txt
• http://www.kde.org/info/security/advisory-20050119-1.txt