Cisco Carrier Routing System IPv6 Denial of Service Vulnerability

A vulnerability in IPv6 over MPLS packet processing of Cisco IOS XR for Cisco Carrier Routing System (CRS) platforms could allow an unauthenticated, adjacent attacker to cause a reload of the affected line card.

The vulnerability is due to insufficient logic in processing of crafted IPv6 over MPLS packets. An attacker could exploit this vulnerability by sending a crafted IPv6 over MPLS packet to be processed by an affected device. An exploit could allow the attacker to cause a reload of the affected line card.

Cisco has not released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160914-crs[“https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160914-crs”]