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.
http://www.securitytracker.com/id/1036321
http://www.securityfocus.com/bid/91800
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160715-bgp