tetex security update

Updated tetex packages that resolve security issues are now available for Red
Hat Enterprise Linux 4.

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

The tetex packages (teTeX) contain an implementation of TeX for Linux or
UNIX systems.

A buffer overflow flaw was found in the Gfx::doImage function of Xpdf which
also affects teTeX due to a shared codebase. An attacker could construct a
carefully crafted PDF file that could cause teTeX 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 teTeX due to a shared codebase. An attacker could
construct a carefully crafted PDF file that could cause teTeX 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.

Users should update to these erratum packages which contain backported
patches to correct these issues.

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/

144257 - CAN-2004-1125 xpdf buffer overflow
145055 - CAN-2005-0064 xpdf buffer overflow

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1125
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0064