A vulnerability in the Internet Key Exchange version 1 (IKEv1) feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper management of system memory. An attacker could exploit this vulnerability by sending malicious IKEv1 traffic to an affected device. The attacker does not need valid credentials to authenticate the VPN session, nor does the attacker's source address need to match a peer statement in the crypto map applied to the ingress interface of the affected device. An exploit could allow the attacker to exhaust system memory resources, leading to a reload of an affected device.

A vulnerability in the Internet Key Exchange version 1 (IKEv1) feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper management of system memory. An attacker could exploit this vulnerability by sending malicious IKEv1 traffic to an affected device. The attacker does not need valid credentials to authenticate the VPN session, nor does the attacker's source address need to match a peer statement in the crypto map applied to the ingress interface of the affected device. An exploit could allow the attacker to exhaust system memory resources, leading to a reload of an affected device.

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According to its self-reported version the Cisco Firepower Threat Defense (FTD) Software running on the remote device is affected by a denial of service (DoS) vulnerability in the Internet Key Exchange version 1 (IKEv1) feature of Cisco Firepower Threat Defense (FTD) Software. The vulnerability is due to improper management of system memory when handling IKEv1 traffic. An unauthenticated, remote attacker can exploit this, via malicious IKEv1 traffic, to cause a reload of the affected device.

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

According to its self-reported version the Cisco Adaptive Security Appliance (ASA) Software running on the remote device is affected by a denial of service (DoS) vulnerability in the Internet Key Exchange version 1 (IKEv1) feature of Cisco Adaptive Security Appliance (ASA) Software. The vulnerability is due to improper management of system memory when handling IKEv1 traffic. An unauthenticated, remote attacker can exploit this, via malicious IKEv1 traffic, to cause a reload of the affected device.

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

ID	Name	Product	Family	Type	Severity
506068	Cisco ASA Uncontrolled Resource Consumption (CVE-2019-15256)	Tenable OT Security	Tenable.ot	Remote	high
133842	Cisco Firepower Threat Defense (FTD) Software IKEv1 DoS (cisco-sa-20191002-asa-ftd-ikev1-dos)	Nessus	CISCO	Local	high
133841	Cisco Adaptive Security Appliance Software IKEv1 DoS (cisco-sa-20191002-asa-ftd-ikev1-dos)	Nessus	CISCO	Local	high

Detections

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CVE-2019-15256

high

Tenable Plugins

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high

high