CVE-2022-20760
Description
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.
How to fix
- cisco adaptive_security_appliance_software9.12.4.38, 9.14.4, 9.15.1.21, 9.16.2.14, 9.17.1.7 or later
- cisco secure_firewall_threat_defense6.4.0.15, 6.6.5.2, 7.0.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco adaptive_security_appliance_software | v < 9.12.4.38, 9.13.0 ≤ v < 9.14.4, 9.15.0 ≤ v < 9.15.1.21, 9.16.0 ≤ v < 9.16.2.14, 9.17.0 ≤ v < 9.17.1.7 | 9.12.4.38, 9.14.4, 9.15.1.21, 9.16.2.14, 9.17.1.7 |
| cisco secure_firewall_threat_defense | v < 6.4.0.15, 6.5.0 ≤ v < 6.6.5.2, 7.0.0 ≤ v < 7.0.2, 7.1.0 | 6.4.0.15, 6.6.5.2, 7.0.2 |
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