CVE-2019-1980: Cisco Firepower Threat Defense Software Nonstandard Protocol Detection Bypass Vulnerability
First published: Tue Nov 05 2019(Updated: )
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.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Firepower Management Center | >=2.9.12<=2.9.12.15 | |
| Cisco Firepower Management Center | >=2.9.13<=2.9.13.6 | |
| Cisco Firepower Management Center | >=2.9.14.0<=2.9.14.5 | |
| Cisco Firepower Management Center | =2.9.15 | |
| Cisco Firepower Management Center | =2.9.16 | |
| Cisco FirePOWER Services Software for ASA | ||
| Cisco Firepower Threat Defense |
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Reference Links
Frequently Asked Questions
What is CVE-2019-1980?
CVE-2019-1980 is 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 that could allow an unauthenticated, remote attacker to bypass filtering protections.
What is the severity of CVE-2019-1980?
The severity of CVE-2019-1980 is medium with a severity value of 5.3.
Which software products are affected by CVE-2019-1980?
The vulnerability affects Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software.
How can an attacker exploit CVE-2019-1980?
An attacker can exploit CVE-2019-1980 by sending specially crafted packets to bypass filtering protections.
Where can I find more information about CVE-2019-1980?
You can find more information about CVE-2019-1980 on the Cisco Security Advisory website: [https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190816-ftd-nspd](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190816-ftd-nspd)
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- version/cisco firepower management center/2.9.12.15
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- version/cisco firepower management center/2.9.13.6
- version/cisco firepower management center/2.9.14.0
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- version/cisco firepower management center/2.9.16
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- canonical/cisco firepower threat defense