A vulnerability in the SSL/TLS certificate handling of Snort 3 Detection Engine integration with Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 detection engine to restart. This vulnerability is due to a logic error that occurs when an SSL/TLS certificate that is under load is accessed when it is initiating an SSL connection. Under specific, time-based constraints, an attacker could exploit this vulnerability by sending a high rate of SSL/TLS connection requests to be inspected by the Snort 3 detection engine on an affected device. A successful exploit could allow the attacker to cause the Snort 3 detection engine to reload, resulting in either a bypass or a denial of service (DoS) condition, depending on device configuration. The Snort detection engine will restart automatically. No manual intervention is required.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firepower_threat_defense | Cisco | 6.7.0 (including) | 6.7.0 (including) |
| Firepower_threat_defense | Cisco | 6.7.0.1 (including) | 6.7.0.1 (including) |
| Firepower_threat_defense | Cisco | 6.7.0.2 (including) | 6.7.0.2 (including) |
| Firepower_threat_defense | Cisco | 6.7.0.3 (including) | 6.7.0.3 (including) |
| Firepower_threat_defense | Cisco | 7.0.0 (including) | 7.0.0 (including) |
| Firepower_threat_defense | Cisco | 7.0.0.1 (including) | 7.0.0.1 (including) |
| Firepower_threat_defense | Cisco | 7.0.1 (including) | 7.0.1 (including) |
| Firepower_threat_defense | Cisco | 7.0.1.1 (including) | 7.0.1.1 (including) |
| Firepower_threat_defense | Cisco | 7.0.2 (including) | 7.0.2 (including) |
| Firepower_threat_defense | Cisco | 7.0.2.1 (including) | 7.0.2.1 (including) |
| Firepower_threat_defense | Cisco | 7.0.3 (including) | 7.0.3 (including) |
| Firepower_threat_defense | Cisco | 7.0.4 (including) | 7.0.4 (including) |
| Firepower_threat_defense | Cisco | 7.0.5 (including) | 7.0.5 (including) |
| Firepower_threat_defense | Cisco | 7.2.0 (including) | 7.2.0 (including) |
| Firepower_threat_defense | Cisco | 7.2.0.1 (including) | 7.2.0.1 (including) |