Important: cups security update

Updated cups packages that fix multiple security issues are now available
for Red Hat Enterprise Linux 3, 4, and 5.

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

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

A buffer overflow flaw was discovered in the SGI image format decoding
routines used by the CUPS image converting filter "imagetops". An attacker
could create a malicious SGI image file that could, possibly, execute
arbitrary code as the "lp" user if the file was printed. (CVE-2008-3639)

An integer overflow flaw leading to a heap buffer overflow was discovered
in the Text-to-PostScript "texttops" filter. An attacker could create a
malicious text file that could, possibly, execute arbitrary code as the
"lp" user if the file was printed. (CVE-2008-3640)

An insufficient buffer bounds checking flaw was discovered in the
HP-GL/2-to-PostScript "hpgltops" filter. An attacker could create a
malicious HP-GL/2 file that could, possibly, execute arbitrary code as the
"lp" user if the file was printed. (CVE-2008-3641)

Red Hat would like to thank regenrecht for reporting these issues.

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

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

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

464710 - CVE-2008-3639 CUPS: SGI image parser heap-based buffer overflow
464713 - CVE-2008-3640 CUPS: texttops integer overflow
464716 - CVE-2008-3641 CUPS: HP/GL reader insufficient bounds checking

https://www.redhat.com/security/data/cve/CVE-2008-3639.html
https://www.redhat.com/security/data/cve/CVE-2008-3640.html
https://www.redhat.com/security/data/cve/CVE-2008-3641.html
http://www.redhat.com/security/updates/classification/#important