The vulnerability of the Snort intrusion detection system of Cisco Firepower Threat Defense (FTD) relates to the use of “Block with Relock” or “Interactive Block with Relock” configurations. This allows a intruder to cause a service failure.

The vulnerability of the Snort intrusion detection system of Cisco Firepower Threat Defense FTD is related to the use of “Block with Relapse” or “Interactive Block with Relapse” configurations. Exploiting this vulnerability allows a malicious actor to trigger a service failure by sending speciall...