CVE-2021-29140 : What You Need to Know

A remote XML external entity (XXE) vulnerability was discovered in Aruba ClearPass Policy Manager versions prior to 6.9.5, 6.8.9, and 6.7.14-HF1. Aruba has released patches to address this security issue.

Understanding CVE-2021-29140

This CVE involves a remote XML external entity vulnerability in Aruba ClearPass Policy Manager, impacting versions prior to 6.9.5, 6.8.9, and 6.7.14-HF1.

What is CVE-2021-29140?

The CVE-2021-29140 is a remote XML external entity (XXE) vulnerability in Aruba ClearPass Policy Manager. Attackers can exploit this vulnerability to access sensitive data or execute arbitrary code remotely.

The Impact of CVE-2021-29140

If exploited, this vulnerability could lead to unauthorized access to sensitive information, data theft, or remote code execution on affected systems, posing a significant security risk to organizations using the vulnerable versions of Aruba ClearPass Policy Manager.

Technical Details of CVE-2021-29140

This section provides detailed technical information about the vulnerability.

Vulnerability Description

CVE-2021-29140 involves a remote XML external entity (XXE) vulnerability in Aruba ClearPass Policy Manager, allowing threat actors to exploit XML-based external entities to access unauthorized content.

Affected Systems and Versions

The vulnerability affects Aruba ClearPass Policy Manager versions prior to 6.9.5, 6.8.9, and 6.7.14-HF1.

Exploitation Mechanism

Attackers can exploit the XXE vulnerability by crafting malicious XML files containing external entity references that, when processed by the application, lead to information disclosure or code execution.

Mitigation and Prevention

To safeguard systems against CVE-2021-29140, follow these security measures.

Immediate Steps to Take

Apply the security patches released by Aruba to mitigate the vulnerability.
Monitor network traffic for any suspicious activity or XML payloads that could indicate exploitation attempts.

Long-Term Security Practices

Keep systems updated with the latest patches and security fixes to prevent similar vulnerabilities in the future.
Conduct regular security audits and penetration testing to identify and address any potential vulnerabilities proactively.

Patching and Updates

Ensure timely application of vendor-supplied patches and updates to secure the Aruba ClearPass Policy Manager and protect it from known security risks.