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

1) Uncontrolled Memory Allocation

EUVDB-ID: #VU99336

Risk: High

CVSSv4.0: 6.6 [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/E:U/U:Amber]

CVE-ID: CVE-2024-20260

CWE-ID: CWE-789 - Uncontrolled Memory Allocation

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Adaptive Security Virtual Appliance (ASAv): 6.2.3 - 9.20.2.21

Cisco Firepower Threat Defense Virtual (FTDv): 6.2.3 - 9.20.2.21

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_adaptive_security_virtual_appliance_asav:6.2.3:*:*:*:*:asa:*:*
• cpe:2.3:a:cisco_systems:cisco_adaptive_security_virtual_appliance_asav:6.2.3.1:*:*:*:*:asa:*:*
• cpe:2.3:a:cisco_systems:cisco_adaptive_security_virtual_appliance_asav:6.2.3.2:*:*:*:*:asa:*:*
• cpe:2.3:a:cisco_systems:ftdv:6.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:ftdv:6.2.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:ftdv:6.2.3.2:*:*:*:*:*:*:*

External links

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftdvirtual-dos-MuenGnYR

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.