High · published May 3, 2022
A vulnerability in the DNS inspection handler of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service condition (DoS) on an affected device. This vulnerability is due to a lack of proper processing of incoming requests. An attacker could exploit this vulnerability by sending crafted DNS requests at a high rate to an affected device. A successful exploit could allow the attacker to cause the device to stop responding, resulting in a DoS condition.
| Product | Versions | Fixed in |
|---|---|---|
| cisco/secure_firewall_threat_defense | < 6.4.0.15 | 6.4.0.15 |
| cisco/secure_firewall_threat_defense | ≥ 6.5.0, < 6.6.5.2 | 6.6.5.2 |
| cisco/secure_firewall_threat_defense | ≥ 7.0.0, < 7.0.2 | 7.0.2 |
| cisco/secure_firewall_threat_defense | all versions | — |
| cisco/adaptive_security_appliance_software | < 9.12.4.38 | 9.12.4.38 |
| cisco/adaptive_security_appliance_software | ≥ 9.13.0, < 9.14.4 | 9.14.4 |
| cisco/adaptive_security_appliance_software | ≥ 9.15.0, < 9.15.1.21 | 9.15.1.21 |
| cisco/adaptive_security_appliance_software | ≥ 9.16.0, < 9.16.2.14 | 9.16.2.14 |
| cisco/adaptive_security_appliance_software | ≥ 9.17.0, < 9.17.1.7 | 9.17.1.7 |