CVE-2021-22992 : Vulnerability Insights and Analysis
Learn about CVE-2021-22992, a critical buffer overflow vulnerability in BIG-IP Advanced WAF and BIG-IP ASM versions, leading to DoS attacks and potential RCE. Find mitigation strategies and patch details here.
A buffer overflow vulnerability, identified as CVE-2021-22992, affects BIG-IP Advanced WAF and BIG-IP ASM versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3, and 11.6.x before 11.6.5.3. This vulnerability could result in a Denial of Service (DoS) attack and potentially permit Remote Code Execution (RCE), leading to system compromise.
Understanding CVE-2021-22992
This section delves into the specifics of the CVE-2021-22992 vulnerability.
What is CVE-2021-22992?
The CVE-2021-22992 vulnerability is a buffer overflow issue that exists in BIG-IP Advanced WAF and BIG-IP ASM software versions. A malicious HTTP response to an Advanced WAF/BIG-IP ASM virtual server with a configured Login Page in its policy could trigger this vulnerability.
The Impact of CVE-2021-22992
The exploitation of this vulnerability could result in a Denial of Service (DoS) attack and, under certain conditions, may allow an attacker to execute arbitrary code remotely, potentially leading to a complete system compromise.
Technical Details of CVE-2021-22992
This section provides detailed technical insights into CVE-2021-22992.
Vulnerability Description
The vulnerability arises due to a buffer overflow triggered by a malicious HTTP response to a server with specific configurations.
Affected Systems and Versions
BIG-IP Advanced WAF and BIG-IP ASM versions 16.0.x, 15.1.x, 14.1.x, 13.1.x, 12.1.x, and 11.6.x before the specified patch versions are impacted by this vulnerability.
Exploitation Mechanism
Exploiting this vulnerability involves sending a crafted HTTP response to a server with Login Page configuration, leading to a buffer overflow.
Mitigation and Prevention
Mitigation strategies to address the CVE-2021-22992 vulnerability are crucial for maintaining system security.
Immediate Steps to Take
Immediately apply the recommended patches and security updates provided by F5 to mitigate the risk posed by this vulnerability.
Long-Term Security Practices
Implement robust security protocols, network segmentation, and access controls to reduce the attack surface and enhance overall system security.
Patching and Updates
Regularly monitor for security advisories and updates from F5 and promptly apply patches to ensure ongoing protection against known vulnerabilities.