Cisco IOS Software RSVP Denial of Service Vulnerability (cisco-sa-20120328-rsvp)
High Nessus Plugin ID 58571
SynopsisThe remote device is missing a vendor-supplied security patch.
DescriptionCisco IOS Software and Cisco IOS XE Software contain a vulnerability in the RSVP feature when used on a device configured with VPN routing and forwarding (VRF) instances. An unauthenticated, remote attacker can exploit this to cause an interface wedge, which can lead to loss of connectivity, loss of routing protocol adjacency, and other denial of service (DoS) conditions. This vulnerability could be exploited repeatedly to cause an extended DoS condition. A workaround is available to mitigate this vulnerability.
Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
SolutionUpgrade to the relevant fixed version referenced in Cisco bug ID(s) CSCts80643.