CVE-2019-1978 : Security Advisory and Response

A vulnerability in the stream reassembly feature of Cisco Firepower Threat Defense Software could allow an attacker to bypass filtering protections without authentication.

Understanding CVE-2019-1978

What is CVE-2019-1978?

The vulnerability in Cisco Firepower Threat Defense Software arises from incorrect reassembly of network traffic streams, enabling an attacker to evade filtering protections.

The Impact of CVE-2019-1978

The vulnerability could allow an attacker to bypass filtering measures and transmit harmful requests to targeted systems that would otherwise be denied access.

Technical Details of CVE-2019-1978

Vulnerability Description

The flaw in the stream reassembly feature of Cisco Firepower Threat Defense Software allows an attacker to evade filtering protections without authentication.

Affected Systems and Versions

Product: Cisco Firepower Threat Defense Software
Vendor: Cisco
Affected Version: Unspecified

Exploitation Mechanism

An attacker can send manipulated streams via an affected device to exploit the vulnerability.

Mitigation and Prevention

Immediate Steps to Take

Apply the latest security patches provided by Cisco.
Monitor network traffic for any suspicious activity.
Implement strong network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch all software and systems.
Conduct security training for employees to raise awareness of potential threats.
Utilize intrusion detection and prevention systems to enhance network security.

Patching and Updates

Cisco has released patches to address this vulnerability. Ensure timely installation of these patches to mitigate the risk of exploitation.