Cisco IOS XE Software Packet Processing Denial of Service Vulnerability

Cisco IOS XE Software Release 16.1.1 contains a vulnerability that could allow an unauthenticated, adjacent attacker to cause an affected device to reload.

The vulnerability is due to incorrect processing of packets that have a source MAC address of 0000:0000:0000. An attacker could exploit this vulnerability by sending a frame that has a source MAC address of all zeros to an affected device. A successful exploit could allow the attacker to cause the device to reload.

Cisco has released software updates that address this vulnerability. There are no workarounds that mitigate this vulnerability.

This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2015-1221-iosxe[“https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2015-1221-iosxe”]