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Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software DNS Inspection Denial of Service Vulnerability

cisco-sa-asaftd-dos-nJVAwOeq · High · Published · Updated

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.  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-dos-nJVAwOeq This advisory is part of the April 2022 release of the Cisco ASA, FTD, and FMC Security Advisory Bundled publication. For a complete list of the advisories and links to them, see Cisco Event Response: April 2022 Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication.

Cisco advisory · CSAF JSON

Workarounds

There are no workarounds that address this vulnerability.

CVEsCVE-2022-20760
Cisco Bug IDsCSCvz76966, CSCwf35233
CVSS ScoreBase 8.6
Base 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X
Product Names From Source
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.1, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.1.5, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.1.7, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.8, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.14, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.15, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.17, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.20, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.24, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.26, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.28, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.33, Cisco Secure Firewall Adaptive 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Related Products

Product CVE Evidence
Cisco Secure Firewall Threat Defense Virtual CVE-2022-20760 Cisco OpenVuln
Cisco Secure Firewall Threat Defense (FTD) Software CVE-2022-20760 Cisco OpenVuln
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CVE-2022-20760 Cisco OpenVuln
Cisco Secure Firewall 4200 Series CVE-2022-20760 Cisco OpenVuln
Cisco Secure Firewall 3100 Series CVE-2022-20760 Cisco OpenVuln
Cisco Firepower 9000 Series CVE-2022-20760 Cisco OpenVuln
Cisco Firepower 4100 Series CVE-2022-20760 Cisco OpenVuln
Cisco Firepower 2100 Series CVE-2022-20760 Cisco OpenVuln
Cisco Firepower 1000 Series CVE-2022-20760 Cisco OpenVuln
Cisco Adaptive Security Virtual Appliance (ASAv) CVE-2022-20760 Cisco OpenVuln
Cisco Adaptive Security Appliance (ASA) Software CVE-2022-20760 Cisco OpenVuln
Cisco ASA 5500-X Series Firewalls CVE-2022-20760 Cisco OpenVuln
Cisco 3000 Series Industrial Security Appliances (ISA) CVE-2022-20760 Cisco OpenVuln