CVE-2020-3572
published 2020-10-21CVE-2020-3572: A vulnerability in the SSL/TLS session handler of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could…
high8.6CVSS 3.1
AVNACLPRNUINSCCNINAH
A vulnerability in the SSL/TLS session handler 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) condition on an affected device. The vulnerability is due to a memory leak when closing SSL/TLS connections in a specific state. An attacker could exploit this vulnerability by establishing several SSL/TLS sessions and ensuring they are closed under certain conditions. A successful exploit could allow the attacker to exhaust memory resources in the affected device, which would prevent it from processing new SSL/TLS connections, resulting in a DoS. Manual intervention is required to recover an affected device.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | adaptive_security_appliance | < 9.6 | 9.6 |
| cisco | adaptive_security_appliance | — | — |
| cisco | adaptive_security_appliance_software | >= 9.10.0 < 9.10.1.44 | 9.10.1.44 |
| cisco | adaptive_security_appliance_software | >= 9.12.0 < 9.12.4.4 | 9.12.4.4 |
| cisco | adaptive_security_appliance_software | >= 9.13.0 < 9.13.1.13 | 9.13.1.13 |
| cisco | adaptive_security_appliance_software | >= 9.14.0 < 9.14.1.19 | 9.14.1.19 |
| cisco | adaptive_security_appliance_software | >= 9.8.0 < 9.8.4.26 | 9.8.4.26 |
| cisco | adaptive_security_appliance_software | >= 9.9.0 < 9.9.2.80 | 9.9.2.80 |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | firepower_threat_defense | < 6.3.0.6 | 6.3.0.6 |
| cisco | firepower_threat_defense | >= 6.4.0 < 6.4.0.10 | 6.4.0.10 |
| cisco | firepower_threat_defense | >= 6.5.0 < 6.6.1 | 6.6.1 |