It was discovered that Quagga incorrectly handled certain malformed messages. A remote attacker could use this flaw to cause Quagga to crash, resulting in a denial of service. Updated packages are available from security.ubuntu.com.
========================================================================== Ubuntu Security Notice USN-1605-1 October 11, 2012 quagga vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 12.04 LTS - Ubuntu 11.10 - Ubuntu 11.04 - Ubuntu 10.04 LTS Summary: Quagga could be made to crash if it received specially crafted network traffic. Software Description: - quagga: BGP/OSPF/RIP routing daemon Details: It was discovered that Quagga incorrectly handled certain malformed messages. A remote attacker could use this flaw to cause Quagga to crash, resulting in a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 LTS: quagga 0.99.20.1-0ubuntu0.12.04.3 Ubuntu 11.10: quagga 0.99.20.1-0ubuntu0.11.10.3 Ubuntu 11.04: quagga 0.99.20.1-0ubuntu0.11.04.3 Ubuntu 10.04 LTS: quagga 0.99.20.1-0ubuntu0.10.04.3 After a standard system update you need to restart Quagga to make all the necessary changes. References: http://www.ubuntu.com/usn/usn-1605-1 CVE-2012-1820 Package Information: https://launchpad.net/ubuntu/+source/quagga/0.99.20.1-0ubuntu0.12.04.3 https://launchpad.net/ubuntu/+source/quagga/0.99.20.1-0ubuntu0.11.10.3 https://launchpad.net/ubuntu/+source/quagga/0.99.20.1-0ubuntu0.11.04.3 https://launchpad.net/ubuntu/+source/quagga/0.99.20.1-0ubuntu0.10.04.3