bgpd in Quagga 0.98 and 0.99 before 20060504 allows local users to cause a denial of service (CPU consumption) via a certain sh ip bgp command entered in the telnet interface.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10651
http://www.securityfocus.com/bid/17979
http://www.redhat.com/support/errata/RHSA-2006-0533.html
http://www.redhat.com/support/errata/RHSA-2006-0525.html
http://www.quagga.net/news2.php?y=2006&m=5&d=4#id1146764580
http://www.gentoo.org/security/en/glsa/glsa-200605-15.xml
http://www.debian.org/security/2006/dsa-1059
http://securitytracker.com/id?1016204
http://secunia.com/advisories/20782
http://secunia.com/advisories/20421
http://secunia.com/advisories/20420
http://secunia.com/advisories/20221
http://secunia.com/advisories/20138