Uncontrolled Memory Allocation in Cisco Adaptive Security Virtual Appliance (ASAv) and Cisco Firepower Threat Defense Virtual (FTDv) - CVE-2024-20260

Vulnerability identifier: #VU99336

CSH Severity: High

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2024-20260

CWE-ID: CWE-789

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 lack of proper memory management for new incoming SSL/TLS connections on the virtual platforms within the VPN and management web servers. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Cisco Adaptive Security Virtual Appliance (ASAv)
Cisco Firepower Threat Defense Virtual (FTDv)

Install updates from vendor's website.

Cisco Adaptive Security Virtual Appliance (ASAv) - addressed in versions 7.0.6.3, 7.2.9, 7.4.2, 7.4.2.1, 7.6.0, 9.16.4.62, 9.16.4.67, 9.16.4.71, 9.17.1.45, 9.18.4.34, 9.18.4.40, 9.18.4.47, 9.19.1.37, 9.20.2.22, 9.20.3, 9.20.3.4, 9.20.3.7, 9.22.1.1
Cisco Firepower Threat Defense Virtual (FTDv) - addressed in versions 7.0.6.3, 7.2.9, 7.4.2, 7.4.2.1, 7.6.0, 9.16.4.62, 9.16.4.67, 9.16.4.71, 9.17.1.45, 9.18.4.34, 9.18.4.40, 9.18.4.47, 9.19.1.37, 9.20.2.22, 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-asaftdvirtual-dos-MuenGnYR

• Denial of service in Cisco Adaptive Security Virtual Appliance and Secure Firewall Threat Defense Virtual