RHSA-2009:1595: Moderate: cups security update

First published: Wed Nov 18 2009(Updated: )

The Common UNIX Printing System (CUPS) provides a portable printing layer<br>for UNIX operating systems.<br>A use-after-free flaw was found in the way CUPS handled references in its<br>file descriptors-handling interface. A remote attacker could, in a<br>specially-crafted way, query for the list of current print jobs for a<br>specific printer, leading to a denial of service (cupsd crash).<br>(CVE-2009-3553)<br>Several cross-site scripting (XSS) flaws were found in the way the CUPS web<br>server interface processed HTML form content. If a remote attacker could<br>trick a local user who is logged into the CUPS web interface into visiting<br>a specially-crafted HTML page, the attacker could retrieve and potentially<br>modify confidential CUPS administration data. (CVE-2009-2820)<br>Red Hat would like to thank Aaron Sigel of Apple Product Security for<br>responsibly reporting the CVE-2009-2820 issue.<br>Users of cups are advised to upgrade to these updated packages, which<br>contain backported patches to correct these issues. After installing the<br>update, the cupsd daemon will be restarted automatically.

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