Important: cups security updateThe Common UNIX Printing System (CUPS) provides a portable printing layerfor UNIX(R) operating systems.A flaw was found in the way CUPS handled the addition and removal of remoteshared printers via IPP. A remote attacker could send malicious UDP IPPpackets causing the CUPS daemon to attempt to dereference already freedmemory and crash. (CVE-2008-0597)A memory management flaw was found in the way CUPS handled the addition andremoval of remote shared printers via IPP. When shared printer wasremoved, allocated memory was not properly freed, leading to a memory leakpossibly causing CUPS daemon crash after exhausting available memory.(CVE-2008-0596)These issues were found during the investigation of CVE-2008-0882, whichdid not affect Red Hat Enterprise Linux 4.Note that the default configuration of CUPS on Red Hat Enterprise Linux4 allow requests of this type only from the local subnet.All CUPS users are advised to upgrade to these updated packages, whichcontain backported patches to resolve these issues.