CVE-2019-15256
Cisco Adaptive Security Appliance Software
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.
Exploitation status
- A vendor advisory or patch reference has been published.
What the metrics mean
- It is reachable over a network, without needing local access.
- For an attacker who can reach it, no special conditions are needed to exploit it.
- To exploit it, no account is needed.
- Beyond that, no action by a user is required.
Scoring
- CVSS
- 8.6 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H- Weakness
- CWE-399
- Assigned by
- psirt@cisco.com
Dates
- Published
- 2019-10-02
- Last modified
- 2026-08-11
- Sources
- NVD
Affected products
- Cisco Adaptive Security Appliance Software9.7 - 9.8.4.10, 9.9 - 9.9.2.47, 9.10 - 9.10.1.30, 9.12 - 9.12.2.5
- Cisco Secure Firewall Threat Defense6.2.0 - 6.2.3.11, 6.3.0 - 6.3.0.2
- Cisco Asa 5505 Firmware9.9\(2.4\), 201.4\(1.21\)
- Cisco Asa 5505all versions
- Cisco Asa 5510 Firmware9.9\(2.4\), 201.4\(1.21\)
- Cisco Asa 5510all versions
- Cisco Asa 5512-X Firmware9.9\(2.4\), 201.4\(1.21\)
- Cisco Asa 5512-Xall versions
- Cisco Asa 5515-X Firmware9.9\(2.4\), 201.4\(1.21\)
- Cisco Asa 5515-Xall versions
- Cisco Asa 5520 Firmware9.9\(2.4\), 201.4\(1.21\)
- Cisco Asa 5520all versions
As listed in the NVD configuration data. Not a statement about your estate.