Cisco Secure Firewall Threat Defense
CVE-2020-3298
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, remote attacker to cause the reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper memory protection mechanisms while processing certain OSPF packets. An attacker could exploit this vulnerability by sending a series of malformed OSPF packets in a short period of time 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.
What this means for your business
- It affects Cisco Secure Firewall Threat Defense. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 2% chance of attack attempts being seen in the next 30 days, ranking above 78% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Cisco Secure Firewall Threat Defense, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 7.5 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness
- CWE-125
- Assigned by
- psirt@cisco.com
Dates
- Published
- 2020-05-06
- Last modified
- 2026-08-11
- Sources
- NVD
Affected products
- Cisco Secure Firewall Threat Defense6.2.0 - 6.2.3.16, 6.3.0 - 6.3.0.6, 6.4.0 - 6.4.0.9, 6.5.0 - 6.5.0.5
- Cisco Adaptive Security Appliance Software9.6.0 - 9.6.4.40, 9.8.0 - 9.8.4.17, 9.9.0 - 9.9.2.66, 9.10.0 - 9.10.1.37, 9.12.0 - 9.12.3.7, 9.13.0 - 9.13.1.7
- Cisco Asa 5506-Xall versions
- Cisco Asa 5506h-Xall versions
- Cisco Asa 5506w-Xall versions
- Cisco Asa 5508-Xall versions
- Cisco Asa 5516-Xall versions
- Cisco Asa 5525-Xall versions
- Cisco Asa 5545-Xall versions
- Cisco Asa 5555-Xall versions
As listed in the NVD configuration data. Not a statement about your estate.