CVE-2021-22988 : Security Advisory and Response

This article provides detailed information about CVE-2021-22988, a remote command execution vulnerability affecting BIG-IP devices.

Understanding CVE-2021-22988

CVE-2021-22988 is a vulnerability that exists in the TMUI (Traffic Management User Interface) component of BIG-IP devices.

What is CVE-2021-22988?

The CVE-2021-22988 vulnerability impacts BIG-IP 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. It allows authenticated attackers to execute remote commands through undisclosed pages in the Configuration utility.

The Impact of CVE-2021-22988

The vulnerability can be exploited by threat actors to execute arbitrary commands on the affected systems, potentially leading to unauthorized access, data theft, or system compromise.

Technical Details of CVE-2021-22988

CVE-2021-22988 is categorized as a Remote Command Execution (RCE) vulnerability, making it critical due to the potential for unauthorized command execution.

Vulnerability Description

The flaw resides in certain pages of the TMUI in BIG-IP devices, enabling authenticated users to execute commands remotely.

Affected Systems and Versions

BIG-IP versions 16.0.x, 15.1.x, 14.1.x, 13.1.x, 12.1.x, and 11.6.x are susceptible to this vulnerability.

Exploitation Mechanism

Attackers with authenticated access can leverage this vulnerability to execute commands on the affected systems through specific undisclosed pages in TMUI.

Mitigation and Prevention

To secure your systems against CVE-2021-22988, follow these guidelines:

Immediate Steps to Take

Update BIG-IP devices to the patched versions: 16.0.1.1, 15.1.2.1, 14.1.4, 13.1.3.6, 12.1.5.3, or 11.6.5.3.
Restrict access to the TMUI interface and monitor for any suspicious activity.

Long-Term Security Practices

Regularly apply security updates and patches to prevent future vulnerabilities.
Implement strong authentication mechanisms and access controls to limit unauthorized access.

Patching and Updates

Refer to the vendor's advisory for detailed instructions on patching BIG-IP devices to mitigate the CVE-2021-22988 vulnerability.