CVE-2021-23023 : Security Advisory and Response

A DLL hijacking vulnerability was discovered in the BIG-IP Edge Client for Windows versions 7.2.1.x before 7.2.1.3 and 7.1.x before 7.1.9.9 Update 1, potentially allowing privilege escalation.

Understanding CVE-2021-23023

This CVE refers to a security issue found in the BIG-IP Edge Client for Windows software.

What is CVE-2021-23023?

The CVE-2021-23023 vulnerability involves a DLL hijacking flaw present in cachecleaner.dll within the BIG-IP Edge Client Windows Installer.

The Impact of CVE-2021-23023

Exploitation of this vulnerability could lead to privilege escalation, enabling an attacker to execute arbitrary code with elevated privileges on the affected system.

Technical Details of CVE-2021-23023

This section provides more insights into the vulnerability.

Vulnerability Description

The issue exists in versions 7.2.1.x before 7.2.1.3 and 7.1.x before 7.1.9.9 Update 1 of the BIG-IP Edge Client for Windows.

Affected Systems and Versions

The vulnerability affects the Edge Client for Windows versions mentioned above.

Exploitation Mechanism

By exploiting the DLL hijacking issue in cachecleaner.dll, threat actors could potentially escalate their privileges on the compromised system.

Mitigation and Prevention

To safeguard your systems, consider the following steps.

Immediate Steps to Take

Apply the necessary security updates provided by the vendor promptly.
Monitor for any signs of unauthorized access or unusual system behavior.

Long-Term Security Practices

Regularly update and patch software to the latest versions.
Implement strong access controls and least privilege principles.
Conduct regular security assessments and penetration testing.

Patching and Updates

Ensure that you have installed the latest updates and patches released by the vendor to mitigate the CVE-2021-23023 vulnerability.