CVE-2019-1978: Cisco Firepower Threat Defense Software Stream Reassembly Bypass Vulnerability
First published: Tue Nov 05 2019(Updated: )
A vulnerability in the stream reassembly 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 reassembly of traffic streams. An attacker could exploit this vulnerability by sending crafted streams 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.
Credit: ykramarz@cisco.com 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 | ||
| Cisco Secure Firewall Management Center | >=2.9.12<=2.9.12.15 | |
| Cisco Secure Firewall Management Center | >=2.9.13<=2.9.13.6 | |
| Cisco Secure Firewall Management Center | >=2.9.14.0<=2.9.14.5 | |
| Cisco Secure Firewall Management Center | =2.9.15 | |
| Cisco Secure Firewall Management Center | =2.9.16 |
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Reference Links
Frequently Asked Questions
What is CVE-2019-1978?
CVE-2019-1978 is a vulnerability in the stream reassembly component of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software that allows an unauthenticated, remote attacker to bypass filtering protections.
What is the severity of CVE-2019-1978?
CVE-2019-1978 has a severity score of 5.8, which is considered medium.
What software is affected by CVE-2019-1978?
Cisco Firepower Management Center, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Threat Defense are affected by CVE-2019-1978.
How can an attacker exploit CVE-2019-1978?
An attacker can exploit CVE-2019-1978 by sending malicious network traffic through a targeted device, which allows them to bypass filtering protections.
Is there a fix for CVE-2019-1978?
Yes, Cisco has released software updates to address the vulnerability. Please refer to the official Cisco Security Advisory for more information.
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