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=========================================================== Ubuntu Security Notice USN-221-1 December 01, 2005 ipsec-tools vulnerability CVE-2005-3732 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 4.10 (Warty Warthog) Ubuntu 5.04 (Hoary Hedgehog) Ubuntu 5.10 (Breezy Badger) The following packages are affected: racoon The problem can be corrected by upgrading the affected package to version 0.3.3-1ubuntu0.2 (for Ubuntu 4.10), 1:0.5-5ubuntu0.1 (for Ubuntu 5.04), or 1:0.6-1ubuntu1.1 (for Ubuntu 5.10). In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: The Oulu University Secure Programming Group discovered a remote Denial of Service vulnerability in the racoon daemon. When the daemon is configured to use aggressive mode, then it did not check whether the peer sent all required payloads during the IKE negotiation phase. A malicious IPsec peer could exploit this to crash the racoon daemon. Please be aware that racoon is not officially supported by Ubuntu, the package is in the 'universe' component of the archive.