Cisco Firepower Detection Engine HTTP Denial of Service Vulnerability

A vulnerability in the detection engine reassembly of HTTP packets for Cisco Firepower System Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the Snort process unexpectedly restarting. The vulnerability is due to improper handling of an HTTP packet stream. An attacker could exploit this vulnerability by sending a crafted HTTP packet stream to the detection engine on the targeted device. An exploit could allow the attacker to cause a DoS condition if the Snort process restarts and traffic inspection is bypassed or traffic is dropped. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Checks if a vulnerable version is present on the target host.

See the referenced vendor advisory for a solution.