CVE-2021-23038 : Security Advisory and Response

A stored cross-site scripting (XSS) vulnerability has been identified in multiple versions of BIG-IP software, allowing attackers to execute JavaScript in the context of a logged-in user. This CVE was published on September 14, 2021.

Understanding CVE-2021-23038

This section will delve into the details of the XSS vulnerability affecting BIG-IP software.

What is CVE-2021-23038?

The vulnerability resides in an undisclosed page of the BIG-IP Configuration utility, present in specific versions of the software.

The Impact of CVE-2021-23038

If exploited, this vulnerability enables attackers to execute malicious JavaScript code within the user's session, potentially leading to unauthorized actions or data exposure.

Technical Details of CVE-2021-23038

Let's explore the technical aspects of this security flaw in BIG-IP software.

Vulnerability Description

CVE-2021-23038 is a stored cross-site scripting (XSS) vulnerability, allowing attackers to inject and execute JavaScript code within the application context.

Affected Systems and Versions

The vulnerability affects BIG-IP versions 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.2, 13.1.x before 13.1.4.1, and all versions of 12.1.x.

Exploitation Mechanism

An attacker can exploit this vulnerability by injecting malicious JavaScript code through the undisclosed page in the BIG-IP Configuration utility.

Mitigation and Prevention

Explore the steps to mitigate and prevent exploitation of CVE-2021-23038.

Immediate Steps to Take

Ensure you have implemented the latest patches and security updates provided by the vendor. Consider restricting access to the affected pages.

Long-Term Security Practices

Regularly monitor for security advisories and updates from the vendor. Conduct security assessments to identify and remediate vulnerabilities proactively.

Patching and Updates

Apply patches released by the vendor promptly to protect systems from known vulnerabilities.