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=========================================================== Ubuntu Security Notice USN-780-1 June 03, 2009 cups, cupsys vulnerability CVE-2009-0949 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 6.06 LTS Ubuntu 8.04 LTS Ubuntu 8.10 Ubuntu 9.04 This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: cupsys 1.2.2-0ubuntu0.6.06.14 Ubuntu 8.04 LTS: cupsys 1.3.7-1ubuntu3.5 Ubuntu 8.10: cups 1.3.9-2ubuntu9.2 Ubuntu 9.04: cups 1.3.9-17ubuntu3.1 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: Anibal Sacco discovered that CUPS did not properly handle certain network operations. A remote attacker could exploit this flaw and cause the CUPS server to crash, resulting in a denial of service.