Unspecified vulnerability in Cisco IOS and Cisco IOS XR 12.x up to 12.3, including some versions before 12.3(15) and 12.3(14)T, allows remote attackers to obtain sensitive information (partial packet contents) or cause a denial of service (router or component crash) via crafted IPv6 packets with a Type 0 routing header.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5840
https://exchange.xforce.ibmcloud.com/vulnerabilities/35906
http://www.vupen.com/english/advisories/2007/2819
http://www.securitytracker.com/id?1018542
http://www.cisco.com/en/US/products/products_security_advisory09186a0080899647.shtml