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Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Denial of Service Vulnerability

cisco-sa-asaftd-dos-4ygzLKU9 · High · Published · Updated

A vulnerability in SSL/TLS message handler for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because incoming SSL/TLS packets are not properly processed. An attacker could exploit this vulnerability by sending a crafted SSL/TLS packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, 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-4ygzLKU9 This advisory is part of the October 2021 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: October 2021 Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication.

Cisco advisory · CSAF JSON

Workarounds

There are no workarounds that address this vulnerability.

CVEsCVE-2021-40117
Cisco Bug IDsCSCvy43187
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 Adaptive Security Appliance (ASA) Software 9.8.1, Cisco Adaptive Security Appliance (ASA) Software 9.8.1.5, Cisco Adaptive Security Appliance (ASA) Software 9.8.1.7, Cisco Adaptive Security Appliance (ASA) Software 9.8.2, Cisco Adaptive Security Appliance (ASA) Software 9.8.2.8, Cisco Adaptive Security Appliance (ASA) Software 9.8.2.14, Cisco Adaptive Security Appliance (ASA) Software 9.8.2.15, Cisco Adaptive Security Appliance (ASA) Software 9.8.2.17, Cisco Adaptive Security Appliance (ASA) Software 9.8.2.20, Cisco Adaptive Security Appliance (ASA) Software 9.8.2.24, Cisco Adaptive Security Appliance (ASA) Software 9.8.2.26, Cisco Adaptive Security Appliance (ASA) Software 9.8.2.28, Cisco Adaptive Security Appliance (ASA) Software 9.8.2.33, Cisco Adaptive Security Appliance (ASA) Software 9.8.2.35, Cisco Adaptive Security Appliance (ASA) Software 9.8.2.38, Cisco Adaptive Security Appliance (ASA) Software 9.8.3.8, Cisco Adaptive Security Appliance (ASA) Software 9.8.3.11, Cisco Adaptive Security Appliance (ASA) Software 9.8.3.14, Cisco Adaptive Security Appliance (ASA) Software 9.8.3.16, Cisco Adaptive Security Appliance (ASA) Software 9.8.3.18, Cisco Adaptive Security Appliance (ASA) Software 9.8.3.21, Cisco Adaptive Security Appliance (ASA) Software 9.8.3, Cisco Adaptive Security Appliance (ASA) Software 9.8.3.26, Cisco Adaptive Security Appliance (ASA) Software 9.8.3.29, Cisco Adaptive Security Appliance (ASA) Software 9.8.4, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.3, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.7, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.8, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.10, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.12, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.15, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.17, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.25, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.20, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.22, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.26, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.29, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.32, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.33, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.34, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.35, Cisco Adaptive Security Appliance (ASA) Software 9.8.4.39, Cisco Adaptive Security Appliance (ASA) Software 9.12.1, Cisco Adaptive Security Appliance (ASA) Software 9.12.1.2, Cisco Adaptive Security Appliance (ASA) Software 9.12.1.3, Cisco Adaptive Security Appliance (ASA) Software 9.12.2, Cisco Adaptive Security Appliance (ASA) Software 9.12.2.4, Cisco Adaptive Security Appliance (ASA) Software 9.12.2.5, Cisco Adaptive Security Appliance (ASA) Software 9.12.2.9, Cisco Adaptive Security Appliance (ASA) Software 9.12.3, Cisco Adaptive Security Appliance (ASA) Software 9.12.3.2, Cisco Adaptive Security Appliance (ASA) Software 9.12.3.7, Cisco Adaptive Security Appliance (ASA) Software 9.12.4, Cisco Adaptive Security Appliance (ASA) Software 9.12.3.12, Cisco Adaptive Security Appliance (ASA) Software 9.12.3.9, Cisco Adaptive Security Appliance (ASA) Software 9.12.2.1, Cisco Adaptive Security Appliance (ASA) Software 9.12.4.2, Cisco Adaptive Security Appliance (ASA) Software 9.12.4.4, Cisco Adaptive Security Appliance (ASA) Software 9.12.4.7, Cisco Adaptive Security Appliance (ASA) Software 9.12.4.10, Cisco Adaptive Security Appliance (ASA) Software 9.12.4.13, Cisco Adaptive Security Appliance (ASA) Software 9.12.4.8, Cisco Adaptive Security Appliance (ASA) Software 9.12.4.18, Cisco Adaptive Security Appliance (ASA) Software 9.12.4.24, Cisco Adaptive Security Appliance (ASA) Software 9.14.1, Cisco Adaptive Security Appliance (ASA) Software 9.14.1.10, Cisco Adaptive Security Appliance (ASA) Software 9.14.1.6, Cisco Adaptive Security Appliance (ASA) Software 9.14.1.15, Cisco Adaptive Security Appliance (ASA) Software 9.14.1.19, Cisco Adaptive Security Appliance (ASA) Software 9.14.1.30, Cisco Adaptive Security Appliance (ASA) Software 9.14.2, Cisco Adaptive Security Appliance (ASA) Software 9.14.2.4, Cisco Adaptive Security Appliance (ASA) Software 9.14.2.8, Cisco Adaptive Security Appliance (ASA) Software 9.14.2.13, Cisco Adaptive Security Appliance (ASA) Software 9.14.2.15, Cisco Adaptive Security Appliance (ASA) Software 9.14.3, Cisco Adaptive Security Appliance (ASA) Software 9.14.3.1, Cisco Firepower Threat Defense Software 6.2.3, Cisco Firepower Threat Defense Software 6.2.3.1, Cisco Firepower Threat Defense Software 6.2.3.2, Cisco Firepower Threat Defense Software 6.2.3.3, Cisco Firepower Threat Defense Software 6.2.3.4, Cisco Firepower Threat Defense Software 6.2.3.5, Cisco Firepower Threat Defense Software 6.2.3.6, Cisco Firepower Threat Defense Software 6.2.3.7, Cisco Firepower Threat Defense Software 6.2.3.8, Cisco Firepower Threat Defense Software 6.2.3.10, Cisco Firepower Threat Defense Software 6.2.3.11, Cisco Firepower Threat Defense Software 6.2.3.9, Cisco Firepower Threat Defense Software 6.2.3.12, Cisco Firepower Threat Defense Software 6.2.3.13, Cisco Firepower Threat Defense Software 6.2.3.14, Cisco Firepower Threat Defense Software 6.2.3.15, Cisco Firepower Threat Defense Software 6.2.3.16, Cisco Firepower Threat Defense Software 6.6.0, Cisco Firepower Threat Defense Software 6.6.0.1, Cisco Firepower Threat Defense Software 6.6.1, Cisco Firepower Threat Defense Software 6.6.3, Cisco Firepower Threat Defense Software 6.6.4, Cisco Firepower Threat Defense Software 6.4.0, Cisco Firepower Threat Defense Software 6.4.0.1, Cisco Firepower Threat Defense Software 6.4.0.3, Cisco Firepower Threat Defense Software 6.4.0.2, Cisco Firepower Threat Defense Software 6.4.0.4, Cisco Firepower Threat Defense Software 6.4.0.5, Cisco Firepower Threat Defense Software 6.4.0.6, Cisco Firepower Threat Defense Software 6.4.0.7, Cisco Firepower Threat Defense Software 6.4.0.8, Cisco Firepower Threat Defense Software 6.4.0.9, Cisco Firepower Threat Defense Software 6.4.0.10, Cisco Firepower Threat Defense Software 6.4.0.11, Cisco Firepower Threat Defense Software 6.4.0.12, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco Firepower 2100 Series, Cisco Firepower 1000 Series, Cisco ASA 5500-X Series Firewalls, Cisco 3000 Series Industrial Security Appliances (ISA), Cisco Firepower 9000 Series, Cisco Firepower 4100 Series, Cisco Adaptive Security Virtual Appliance (ASAv), Cisco Secure Firewall Threat Defense Virtual

Related Products

Product CVE Evidence
Cisco Secure Firewall Threat Defense Virtual CVE-2021-40117 Cisco OpenVuln
Cisco Secure Firewall Threat Defense (FTD) Software CVE-2021-40117 Cisco OpenVuln
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CVE-2021-40117 Cisco OpenVuln
Cisco Firepower Threat Defense Software CVE-2021-40117 Cisco OpenVuln
Cisco Firepower 9000 Series CVE-2021-40117 Cisco OpenVuln
Cisco Firepower 4100 Series CVE-2021-40117 Cisco OpenVuln
Cisco Firepower 2100 Series CVE-2021-40117 Cisco OpenVuln
Cisco Firepower 1000 Series CVE-2021-40117 Cisco OpenVuln
Cisco Adaptive Security Virtual Appliance (ASAv) CVE-2021-40117 Cisco OpenVuln
Cisco Adaptive Security Appliance (ASA) Software CVE-2021-40117 Cisco OpenVuln
Cisco ASA 5500-X Series Firewalls CVE-2021-40117 Cisco OpenVuln
Cisco 3000 Series Industrial Security Appliances (ISA) CVE-2021-40117 Cisco OpenVuln