CVE-2019-12676 Denial of service in Cisco Adaptive Security Appliance (ASA) Software
An unauthenticated adjacent attacker can cause a device reload and denial of service by sending crafted OSPF LSA type 11 packets to Cisco ASA or FTD devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-12676?
CVE-2019-12676 is a high-severity denial of service vulnerability in Cisco Adaptive Security Appliance, published on 2 Oct 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the Open Shortest Path First (OSPF) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software improperly parses certain options in OSPF link-state advertisement (LSA) type 11 packets. An attacker could exploit this vulnerability by sending a crafted LSA type 11 OSPF packet to an affected device. A successful exploit could allow the attacker to cause a reload of the affected device, resulting in a DoS condition for client traffic that is traversing the device.
Weakness: CWE-20
Which versions are affected by CVE-2019-12676?
It affects 3 products.
Products include Cisco Adaptive Security Appliance, Cisco Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense.
How do I fix CVE-2019-12676?
No fix has been published for CVE-2019-12676 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-12676 being exploited?
There is no known exploitation of CVE-2019-12676 in the wild and no public exploit code.
Other vulnerabilities in Cisco Adaptive Security Appliance
- CVE-2021-1573 Denial of service in Cisco Adaptive Security Appliance Software
- CVE-2021-34793 Denial of service in Cisco Adaptive Security Appliance (ASA) Software
- CVE-2021-40117 Denial of service in Cisco Adaptive Security Appliance (ASA) Software
- CVE-2021-40118 Denial of service in Cisco Adaptive Security Appliance (ASA) Software
- CVE-2020-3304 Denial of service in Cisco Adaptive Security Appliance (ASA) Software
Sources
Also known as GHSA-c438-397x-vxwr.