high
8.6
CWE
400
Advisory Published
Updated

CVE-2020-3196: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Denial of Service Vulnerability

First published: Wed May 06 2020(Updated: )

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.

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco Firepower Threat Defense>=6.2.3<6.2.3.16
Cisco Firepower Threat Defense>=6.3.0<6.3.0.6
Cisco Firepower Threat Defense>=6.4.0<6.4.0.9
Cisco Firepower Threat Defense>=6.5.0<6.5.0.5
Cisco Asa 5505 Firmware=9.4\(4\)
Cisco Asa 5505 Firmware=9.8\(4.18\)
Cisco Asa 5505 Firmware=100.13\(0\)
Cisco Asa 5505
Cisco Asa 5510 Firmware=9.4\(4\)
Cisco Asa 5510 Firmware=9.8\(4.18\)
Cisco Asa 5510 Firmware=100.13\(0\)
Cisco Asa 5510
Cisco Asa 5512-x Firmware=9.4\(4\)
Cisco Asa 5512-x Firmware=9.8\(4.18\)
Cisco Asa 5512-x Firmware=100.13\(0\)
Cisco Asa 5512-x
Cisco Asa 5515-x Firmware=9.4\(4\)
Cisco Asa 5515-x Firmware=9.8\(4.18\)
Cisco Asa 5515-x Firmware=100.13\(0\)
Cisco Asa 5515-x
Cisco Asa 5520 Firmware=9.4\(4\)
Cisco Asa 5520 Firmware=9.8\(4.18\)
Cisco Asa 5520 Firmware=100.13\(0\)
Cisco Asa 5520
Cisco Asa 5525-x Firmware=9.4\(4\)
Cisco Asa 5525-x Firmware=9.8\(4.18\)
Cisco Asa 5525-x Firmware=100.13\(0\)
Cisco Asa 5525-x
Cisco Asa 5540 Firmware=9.4\(4\)
Cisco Asa 5540 Firmware=9.8\(4.18\)
Cisco Asa 5540 Firmware=100.13\(0\)
Cisco Asa 5540
Cisco Asa 5545-x Firmware=9.4\(4\)
Cisco Asa 5545-x Firmware=9.8\(4.18\)
Cisco Asa 5545-x Firmware=100.13\(0\)
Cisco Asa 5545-x
Cisco Asa 5550 Firmware=9.4\(4\)
Cisco Asa 5550 Firmware=9.8\(4.18\)
Cisco Asa 5550 Firmware=100.13\(0\)
Cisco Asa 5550
Cisco Asa 5555-x Firmware=9.4\(4\)
Cisco Asa 5555-x Firmware=9.8\(4.18\)
Cisco Asa 5555-x Firmware=100.13\(0\)
Cisco Asa 5555-x
Cisco Asa 5580 Firmware=9.4\(4\)
Cisco Asa 5580 Firmware=9.8\(4.18\)
Cisco Asa 5580 Firmware=100.13\(0\)
Cisco Asa 5580
Cisco Asa 5585-x Firmware=9.4\(4\)
Cisco Asa 5585-x Firmware=9.8\(4.18\)
Cisco Asa 5585-x Firmware=100.13\(0\)
Cisco Asa 5585-x
Cisco Adaptive Security Appliance Software>=9.6<9.6.4.40
Cisco Adaptive Security Appliance Software>=9.8<9.8.4.20
Cisco Adaptive Security Appliance Software>=9.9<9.9.2.66
Cisco Adaptive Security Appliance Software>=9.10<9.10.1.37
Cisco Adaptive Security Appliance Software>=9.12<9.12.3.2
Cisco Adaptive Security Appliance Software>=9.13<9.13.1.7

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