(RHSA-2007:1023) Important: cups security update

The Common UNIX Printing System (CUPS) provides a portable printing layer
for UNIX® operating systems.

Alin Rad Pop discovered a flaw in the handling of PDF files. An attacker
could create a malicious PDF file that would cause CUPS to crash or
potentially execute arbitrary code when printed. (CVE-2007-5393)

Alin Rad Pop discovered a flaw in in the way CUPS handles certain IPP tags.
A remote attacker who is able to connect to the IPP TCP port could send a
malicious request causing the CUPS daemon to crash. (CVE-2007-4351)

A flaw was found in the way CUPS handled SSL negotiation. A remote attacker
capable of connecting to the CUPS daemon could cause CUPS to crash.
(CVE-2007-4045)

All CUPS users are advised to upgrade to these updated packages, which
contain backported patches to resolve these issues.