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.
http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2011-12/msg00009.html
http://rhn.redhat.com/errata/RHSA-2012-1258.html
http://secunia.com/advisories/43499
http://secunia.com/advisories/43770
http://secunia.com/advisories/48106
http://security.gentoo.org/glsa/glsa-201202-02.xml
http://www.debian.org/security/2011/dsa-2197
http://www.mandriva.com/security/advisories?name=MDVSA-2011:058
http://www.quagga.net/news2.php?y=2011&m=3&d=21#id1300723200
http://www.securityfocus.com/bid/46942
http://www.vupen.com/english/advisories/2011/0711
Source: MITRE
Published: 2011-03-29
Updated: 2018-01-06
Type: NVD-CWE-Other
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM