Cisco Systems has started releasing security patches for a critical flaw in Adaptive Security Appliance (ASA) firewalls targeted by an exploit linked to the U.S. National Security Agency. The exploit, dubbed ExtraBacon, is one of the tools used by a group that the security industry calls the Equation, believed to be a cyberespionage team tied to the NSA. It exploits a buffer overflow vulnerability in the Simple Network Management Protocol (SNMP) implementation from Cisco’s ASA software.”]

