Buffer overflow in Cisco Systems, Inc products - CVE-2022-20927

Vulnerability identifier: #VU69199

CSH Severity: Medium

CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-20927

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in the SSL/TLS client. A remote user can trigger memory corruption and cause a denial of service condition on the target system.

Firepower 9300 Series Security Appliances
Cisco ASA 5500-X Series
Cisco Firewall Threat Defense (FTD)
Cisco Adaptive Security Appliance (ASA)
Firepower 4100 Series Security Appliances

Install updates from vendor's website.

Cisco Firewall Threat Defense (FTD) - addressed in versions 006.006(007), 007.000(002), 007.002(000), 9.14.4, 9.14.4.13, 9.14.4.14, 9.14.4.15, 9.14.4.17, 9.16.3, 9.16.3.19, 9.16.3.23, 9.16.4, 9.17.1.13, 9.17.1.15, 9.17.1.20, 009.018(001), 9.18.1, 9.18.2, 9.18.2.5
Cisco Adaptive Security Appliance (ASA) - addressed in versions 006.006(007), 007.000(002), 007.002(000), 9.14.4, 9.14.4.13, 9.14.4.14, 9.14.4.15, 9.14.4.17, 9.16.3, 9.16.3.19, 9.16.3.23, 9.16.4, 9.17.1.13, 9.17.1.15, 9.17.1.20, 009.018(001), 9.18.1, 9.18.2, 9.18.2.5

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssl-client-dos-cCrQPkA

• Denial of service in Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software