RHSA-2008:0937: Important: cups security update

The Common UNIX Printing System (CUPS) provides a portable printing layerfor UNIX(R) operating systems.A buffer overflow flaw was discovered in the SGI image format decodingroutines used by the CUPS image converting filter "imagetops". An attackercould create a malicious SGI image file that could, possibly, executearbitrary code as the "lp" user if the file was printed. (CVE-2008-3639)An integer overflow flaw leading to a heap buffer overflow was discoveredin the Text-to-PostScript "texttops" filter. An attacker could create amalicious 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 theHP-GL/2-to-PostScript "hpgltops" filter. An attacker could create amalicious 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, whichcontain backported patches to resolve these issues.