CVE-2021-23030 : What You Need to Know
CVE-2021-23030 impacts BIG-IP Advanced WAF and BIG-IP ASM versions with WebSocket profile configuration vulnerability, potentially leading to unexpected process termination. Learn more about mitigation and prevention.
This CVE affects BIG-IP Advanced WAF and BIG-IP ASM versions 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, 13.1.x before 13.1.4.1, and all versions of 12.1.x. A vulnerability in the WebSocket profile configuration can lead to unexpected termination of the bd process.
Understanding CVE-2021-23030
This CVE impacts versions of BIG-IP Advanced WAF and BIG-IP ASM prior to specified versions when certain conditions are met.
What is CVE-2021-23030?
The vulnerability in the WebSocket profile of certain versions of BIG-IP Advanced WAF and BIG-IP ASM allows undisclosed requests to trigger the termination of the bd process.
The Impact of CVE-2021-23030
Exploitation of this vulnerability may lead to a denial of service (DoS) condition where the bd process terminates unexpectedly, impacting the availability of the affected system.
Technical Details of CVE-2021-23030
The following technical aspects of the CVE are crucial:
Vulnerability Description
When a WebSocket profile is set up on a virtual server in the mentioned versions, certain requests can cause the bd process to terminate unexpectedly.
Affected Systems and Versions
BIG-IP Advanced WAF and BIG-IP ASM versions 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, 13.1.x before 13.1.4.1, and all versions of 12.1.x are affected by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by sending specific requests to a virtual server with a WebSocket profile, triggering the unexpected termination of the bd process.
Mitigation and Prevention
To address CVE-2021-23030, consider the following:
Immediate Steps to Take
- Apply the necessary security patches provided by F5 for the affected products and versions.
Long-Term Security Practices
- Regularly update and patch your F5 products to mitigate known vulnerabilities.
- Monitor security advisories and updates from F5 to stay informed about potential risks.
Patching and Updates
- Ensure timely installation of security patches released by F5 to prevent exploitation of this vulnerability.