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.Referenceshttp://www.securityfocus.com/bid/46942http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.htmlhttp://security.gentoo.org/glsa/glsa-201202-02.xmlhttp://rhn.redhat.com/errata/RHSA-2012-1258.htmlhttp://lists.opensuse.org/opensuse-security-announce/2011-12/msg00009.htmlhttps://bugzilla.redhat.com/show_bug.cgi?id=654603http://secunia.com/advisories/43770http://secunia.com/advisories/48106http://www.debian.org/security/2011/dsa-2197http://www.vupen.com/english/advisories/2011/0711http://www.quagga.net/news2.php?y=2011&m=3&d=21#id1300723200http://www.mandriva.com/security/advisories?name=MDVSA-2011:058https://exchange.xforce.ibmcloud.com/vulnerabilities/66211http://www.osvdb.org/71259http://secunia.com/advisories/43499
