Resource exhaustion in Cisco Adaptive Security Appliance Software
CVE-2022-20760
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.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.016 (72.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Adaptive_security_appliance_software
- Cisco Adaptive Security Appliance (Asa) Software — versions n/a
- Cisco Firepower_threat_defense — versions 7.1.0
- Cisco Secure_firewall_threat_defense — versions 7.1.0
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-20760?
- CVE-2022-20760 is a high-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under Uncontrolled Resource Consumption. CVSS score: 8.6/10. Published 2022-05-03.
- How severe is CVE-2022-20760?
- High severity. CVSS v3 base score is 8.6 out of 10.