CVE-2024-20481
Cisco ASA and FTD Denial-of-Service Vulnerability
CVSS
5.8
Média
EPSS
15.9%
p97
KEV
SIM
24 de out. de 2024
Exploit Today
79
0-100
Publicado: 23 de out. de 2024 · Última mod.: 11 de ago. de 2026 · CWE-772
Produto
Cisco / Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
Vulnerabilidade
Cisco ASA and FTD Denial-of-Service Vulnerability
Adicionado ao KEV
24 de out. de 2024
Corrigir até
14 de nov. de 2024
Uso conhecido em ransomware
Não
Descrição resumida
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain a missing release of resource after effective lifetime vulnerability that could allow an unauthenticated, remote attacker to cause a denial-of-service (DoS) of the RAVPN service.
Ação necessária
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notas
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-bf-dos-vDZhLqrW ; https://nvd.nist.gov/vuln/detail/CVE-2024-20481
A vulnerability in the Remote Access VPN (RAVPN) service of 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) of the RAVPN service. This vulnerability is due to resource exhaustion. An attacker could exploit this vulnerability by sending a large number of VPN authentication requests to an affected device. A successful exploit could allow the attacker to exhaust resources, resulting in a DoS of the RAVPN service on the affected device. Depending on the impact of the attack, a reload of the device may be required to restore the RAVPN service. Services that are not related to VPN are not affected. Cisco Talos discussed these attacks in the blog post Large-scale brute-force activity targeting VPNs, SSH services with commonly used login credentials.