Cisco IOS 12.4(24)gc5 Denial Of Service Vulnerability
7 Sep. 2016
Cisco IOS 12.4 and 15.0 through 15.5 and IOS XE 3.13 through 3.17 allow remote authenticated users to cause a denial of service (device reload) via crafted attributes in a BGP message, aka Bug ID CSCuz21061.
A vulnerability in Border Gateway Protocol (BGP) message processing functions of Cisco IOS and IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload.
The vulnerability is due to improper processing of crafted BGP attributes. An attacker could exploit this vulnerability by sending crafted BGP messages to an affected device for processing when certain conditions are met. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.
There are workarounds that address this vulnerability.