Where
-Infinity
0
Severity
7
Null Pointer Dereference

Anibal Sacco from Core Security Technologies discovered a NULL pointer dereference flaw in CUPS daemon when handling the IPPTAGUNSUPPORTED, which allows remote attackers with access to CUPS' IPP port to crash cupsd.

Acknowledgements:

Red Hat would like to thank Anibal Sacco from Core Security Technologies for reporting this issue.

First published (updated )

The Common UNIX® Printing System (CUPS) provides a portable printing layerfor UNIX operating systems.The CUPS security advisory, RHSA-2008:0937, stated that it fixedCVE-2008-3640 for Red Hat Enterprise Linux 3, 4, and 5. It was discoveredthis flaw was not properly fixed on Red Hat Enterprise Linux 3, however.(CVE-2009-0577)These new packages contain a proper fix for CVE-2008-3640 on Red HatEnterprise Linux 3. Red Hat Enterprise Linux 4 and 5 already contain theappropriate fix for this flaw and do not need to be updated.Users of cups should upgrade to these updated packages, which contain abackported patch to correct this issue.

Remedy

Before applying this update, make sure that all previously-released<br>errata relevant to your system have been applied.<br>This update is available via Red Hat Network. Details on how to use<br>the Red Hat Network to apply this update are available at<br><a href="http://kbase.redhat.com/faq/docs/DOC-11259" target="_blank">http://kbase.redhat.com/faq/docs/DOC-11259</a>
First published (updated )

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