Cisco has released a security advisory to address multiple vulnerabilities in IOS Software. Exploitation of these vulnerabilities may allow an attacker to cause a denial-of-service condition when handling specific Border Gateway Protocol (BGP) updates. The advisory indicates that these vulnerabilities affect only Cisco IOS
Software with support for four-octet AS number space and BGP routing
DarkFiber Consulting encourages users and administrators to review Cisco Security Advisory cisco-sa-20090729-bgp and apply any necessary updates to help mitigate the risks.