Unspecified vulnerability in Juniper JUNOS 7.3 through 8.4 allows remote attackers to cause a denial of service (crash) via malformed BGP packets, possibly BGP UPDATE packets that trigger session flapping.
http://www.vupen.com/english/advisories/2007/4223
http://www.securitytracker.com/id?1019100
http://www.securityfocus.com/bid/28999
http://www.securityfocus.com/bid/26869