The DMVPN tunnel implementation in Cisco IOS 15.2 allows remote attackers to cause a denial of service (persistent IKE state) via a large volume of hub-to-spoke traffic, aka Bug ID CSCtq39602.Referenceshttp://www.cisco.com/en/US/docs/ios/15_2s/release/notes/15_2s_caveats_15_2_2s.htmlhttps://exchange.xforce.ibmcloud.com/vulnerabilities/78809
