CVE-2019-1980 Cisco Firepower Threat Defense Software Nonstandard Protocol Detection Bypass Vulnerability
An unauthenticated remote attacker can bypass filtering protections by sending traffic on nonstandard ports, allowing malicious requests to reach protected systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-1980?
CVE-2019-1980 is a medium-severity vulnerability in Cisco Secure Firewall Management Center, published on 5 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the protocol detection component of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software could allow an unauthenticated, remote attacker to bypass filtering protections. The vulnerability is due to improper detection of the initial use of a protocol on a nonstandard port. An attacker could exploit this vulnerability by sending traffic on a nonstandard port for the protocol in use through an affected device. An exploit could allow the attacker to bypass filtering and deliver malicious requests to protected systems that would otherwise be blocked. Once the initial protocol flow on the nonstandard port is detected, future flows on the nonstandard port will be successfully detected and handled as configured by the applied policy.
Which versions are affected by CVE-2019-1980?
It affects 3 products.
Products include Cisco Firepower Services Software for Asa, Cisco Secure Firewall Management Center, Cisco Secure Firewall Threat Defense.
How do I fix CVE-2019-1980?
No fix has been published for CVE-2019-1980 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-1980 being exploited?
There is no known exploitation of CVE-2019-1980 in the wild and no public exploit code.
Other vulnerabilities in Cisco Secure Firewall Management Center
- CVE-2022-20918 Hardcoded credentials in Cisco FirePOWER Services Software for ASA
- CVE-2019-1978 Cisco Firepower Threat Defense Software Stream Reassembly Bypass Vulnerability
- CVE-2019-1981 Cisco Firepower Threat Defense Software NULL Character Obfuscation Detection Bypass Vulnerability
- CVE-2019-1982 Cisco Firepower Threat Defense Software HTTP Filtering Bypass Vulnerability
Sources
Also known as GHSA-fh23-j4mf-74wm.