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.

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.

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A vulnerability exists in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) handler of Cisco Firepower Threat Defense (FTD) Software due to improper resource management for inbound SSL/TLS connections. An unauthenticated, remote attacker can exploit this, by establishing multiple SSL/TLS connections with specific conditions to the affected device, in order to exhaust memory resources on the affected device, leading to a denial of service (DoS) condition.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

A vulnerability exists in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) handler of Cisco Adaptive Security Appliance (ASA) Software due to improper resource management for inbound SSL/TLS connections. An unauthenticated, remote attacker can exploit this, by establishing multiple SSL/TLS connections with specific conditions to the affected device, in order to exhaust memory resources on the affected device, leading to a denial of service (DoS) condition.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
506157	Cisco ASA Uncontrolled Resource Consumption (CVE-2020-3196)	Tenable OT Security	Tenable.ot	Remote	high
136917	Cisco Firepower Threat Defense Software SSL/TLS DoS (cisco-sa-asa-ssl-vpn-dos-qY7BHpjN)	Nessus	CISCO	Local	high
136916	Cisco Adaptive Security Appliance Software SSL/TLS DoS (cisco-sa-asa-ssl-vpn-dos-qY7BHpjN)	Nessus	CISCO	Local	high

Detections

Analytics

CVE-2020-3196

high

Tenable Plugins

high

high

high