Cisco IOS vulnerable to DoS via unrecognized transitive attribute in BGP UPDATE

Overview There is a denial-of-service vulnerability in several specific but common configurations of Cisco IOS. Description There is a problem involving BGP updates on Cisco routers with BGP4 Prefix Filtering and Inbound Route Maps enabled. A route update with an unrecognized transitive attribute...

tcp.md5.router.dos.txt

Date: Mon, 14 Jun 1999 14:29:54 -0400 From: Craig Metz To: [email protected] Subject: TCP MD5 option problem I was implementing the RFC 2385 "Protection of BGP Sessions via the TCP MD5 Signature Option" option in the OpenBSD stack. For those who don't know the significance of this option, it i...