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=========================================================== Ubuntu Security Notice USN-326-1 July 27, 2006 heartbeat vulnerability CVE-2006-3815 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 5.04 Ubuntu 5.10 Ubuntu 6.06 LTS 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 5.04: heartbeat 1.2.3-3ubuntu1.2 Ubuntu 5.10: heartbeat 1.2.3-12ubuntu0.1 Ubuntu 6.06 LTS: heartbeat 1.2.4-2ubuntu0.1 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: Yan Rong Ge discovered that heartbeat did not set proper permissions for an allocated shared memory segment. A local attacker could exploit this to render the heartbeat service unavailable (Denial of Service).