Learn about CVE-2019-1981 affecting Cisco Firepower Threat Defense Software. Find out how attackers can bypass security measures and transmit harmful payloads.
A weakness has been identified in the normalization feature of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software, potentially enabling unauthorized remote attackers to bypass security measures.
Understanding CVE-2019-1981
What is CVE-2019-1981?
The vulnerability in Cisco Firepower Threat Defense Software allows attackers to evade filtering mechanisms and transmit harmful payloads to protected systems.
The Impact of CVE-2019-1981
The vulnerability could lead to unauthorized remote attackers bypassing security measures and transmitting harmful payloads to protected systems.
Technical Details of CVE-2019-1981
Vulnerability Description
The vulnerability arises from inadequate normalization of a payload in text format, allowing attackers to send traffic with concealed payloads through affected devices.
Affected Systems and Versions
Exploitation Mechanism
Attackers exploit the vulnerability by sending traffic with concealed payloads through affected devices, evading filtering mechanisms.
Mitigation and Prevention
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates