Gentoo Linux Security Advisory 201202-2 - Multiple vulnerabilities were found in Quagga, the worst of which leading to remote execution of arbitrary code. Versions less than 0.99.20 are affected.
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Mandriva Linux Security Advisory 2011-058 - The extended-community parser in bgpd in Quagga before 0.99.18 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a malformed Extended Communities attribute. bgpd in Quagga before 0.99.18 allows remote attackers to cause a denial of service via a malformed AS_PATHLIMIT path attribute. Updated packages are available that bring Quagga to version 0.99.18 which provides numerous bugfixes over the previous 0.99.17 version, and also corrects these issues.
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Ubuntu Security Notice 1095-1 - It was discovered that Quagga incorrectly parsed certain malformed extended communities. A remote attacker could use this flaw to cause Quagga to crash, resulting in a denial of service. It was discovered that Quagga resets BGP sessions when encountering malformed AS_PATHLIMIT attributes. A remote attacker could use this flaw to disrupt BGP sessions, resulting in a denial of service. This update removes AS_PATHLIMIT support from Quagga. This issue only affected Ubuntu 8.04 LTS, 9.10, 10.04 LTS and 10.10.
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Debian Linux Security Advisory 2197-1 - It has been discovered that the Quagga routing daemon contains two denial-of-service vulnerabilities in its BGP implementation. A crafted Extended Communities attribute triggers a null pointer dereference which causes the BGP daemon to crash. The BGP daemon resets BGP sessions when it encounters malformed AS_PATHLIMIT attributes, introducing a distributed BGP session reset vulnerability which disrupts packet forwarding.
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