Authentication Bypass by Spoofing in Cisco Adaptive Security Appliance (ASA) and Cisco Firewall Threat Defense (FTD) - CVE-2024-20384

Vulnerability identifier: #VU99340

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2024-20384

CWE-ID: CWE-290

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to a logic error in populating group ACLs within the Network Service Group (NSG) feature. A remote attacker can bypass configured ACL rules.

Cisco Adaptive Security Appliance (ASA)
Cisco Firewall Threat Defense (FTD)

Install updates from vendor's website.

Cisco Adaptive Security Appliance (ASA) - addressed in versions 7.0.6.3, 7.2.9, 7.4.2.1, 7.6.0, 9.16.4.62, 9.16.4.67, 9.16.4.70, 9.16.4.71, 9.17.1.45, 9.18.4.34, 9.18.4.40, 9.18.4.47, 9.19.1.37, 9.20.3, 9.20.3.4, 9.20.3.7, 9.22.1.1
Cisco Firewall Threat Defense (FTD) - addressed in versions 7.0.6.3, 7.2.9, 7.4.2.1, 7.6.0, 9.16.4.62, 9.16.4.67, 9.16.4.70, 9.16.4.71, 9.17.1.45, 9.18.4.34, 9.18.4.40, 9.18.4.47, 9.19.1.37, 9.20.3, 9.20.3.4, 9.20.3.7, 9.22.1.1

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-nsgacl-bypass-77XnEAsL

• Authentication Bypass by Spoofing in Cisco Adaptive Security Appliance and Firepower Threat Defense Software