=========================================================== Ubuntu Security Notice USN-906-1 March 03, 2010 cups, cupsys vulnerabilities CVE-2009-3553, CVE-2010-0302, CVE-2010-0393 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 6.06 LTS Ubuntu 8.04 LTS Ubuntu 8.10 Ubuntu 9.04 Ubuntu 9.10 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 1.2.2-0ubuntu0.6.06.17 cupsys-client 1.2.2-0ubuntu0.6.06.17 Ubuntu 8.04 LTS: cupsys 1.3.7-1ubuntu3.8 cupsys-client 1.3.7-1ubuntu3.8 Ubuntu 8.10: cups 1.3.9-2ubuntu9.5 cups-client 1.3.9-2ubuntu9.5 Ubuntu 9.04: cups 1.3.9-17ubuntu3.6 cups-client 1.3.9-17ubuntu3.6 Ubuntu 9.10: cups 1.4.1-5ubuntu2.4 cups-client 1.4.1-5ubuntu2.4 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: It was discovered that the CUPS scheduler 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. This issue only affected Ubuntu 8.04 LTS, 8.10, 9.04 and 9.10. (CVE-2009-3553, CVE-2010-0302) Ronald Volgers discovered that the CUPS lppasswd tool could be made to load localized message strings from arbitrary files by setting an environment variable. A local attacker could exploit this with a format-string vulnerability leading to a root privilege escalation. The default compiler options for Ubuntu 8.10, 9.04 and 9.10 should reduce this vulnerability to a denial of service. (CVE-2010-0393)