The RIP service engine in Cisco NX-OS allows remote attackers to cause a denial of service (engine restart) via a malformed (1) RIPv4 or (2) RIPv6 message, aka Bug ID CSCtj73415.
https://exchange.xforce.ibmcloud.com/vulnerabilities/87669
http://www.securitytracker.com/id/1029159
http://www.securityfocus.com/bid/62838
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2012-4091