CVE-2020-3196
A vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) handler of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepowe…
Impact
A vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) handler of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to exhaust memory resources on the affected device, leading to a denial of service (DoS) condition. The vulnerability is due to improper resource management for inbound SSL/TLS connections. An attacker could exploit this vulnerability by establishing multiple SSL/TLS connections with specific conditions to the affected device. A successful exploit could allow the attacker to exhaust the memory on the affected device, causing the device to stop accepting new SSL/TLS connections and resulting in a DoS condition for services on the device that process SSL/TLS traffic. Manual intervention is required to recover an affected device.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cisco | Secure Firewall Threat Defense | from 6.2.3 before 6.2.3.16 from 6.3.0 before 6.3.0.6 from 6.4.0 before 6.4.0.9 from 6.5.0 before 6.5.0.5 |
| Cisco | Asa 5505 Firmware | Versions 9.4\(4\), 9.8\(4.18\), 100.13\(0\) |
| Cisco | Asa 5510 Firmware | Versions 9.4\(4\), 9.8\(4.18\), 100.13\(0\) |
| Cisco | Asa 5512-X Firmware | Versions 9.4\(4\), 9.8\(4.18\), 100.13\(0\) |
| Cisco | Asa 5515-X Firmware | Versions 9.4\(4\), 9.8\(4.18\), 100.13\(0\) |
| Cisco | Asa 5520 Firmware | Versions 9.4\(4\), 9.8\(4.18\), 100.13\(0\) |
| Cisco | Asa 5525-X Firmware | Versions 9.4\(4\), 9.8\(4.18\), 100.13\(0\) |
| Cisco | Asa 5540 Firmware | Versions 9.4\(4\), 9.8\(4.18\), 100.13\(0\) |
| Cisco | Asa 5545-X Firmware | Versions 9.4\(4\), 9.8\(4.18\), 100.13\(0\) |
| Cisco | Asa 5550 Firmware | Versions 9.4\(4\), 9.8\(4.18\), 100.13\(0\) |
| Cisco | Asa 5555-X Firmware | Versions 9.4\(4\), 9.8\(4.18\), 100.13\(0\) |
| Cisco | Asa 5580 Firmware | Versions 9.4\(4\), 9.8\(4.18\), 100.13\(0\) |