CVE-2019-6639 : Exploit Details and Defense Strategies

A vulnerability affecting F5's BIG-IP (AFM, PEM) versions 11.5.1-14.1.0.5 allows for stored cross-site scripting (XSS) attacks in TMUI pages for AFM and PEM Subscriber management.

Understanding CVE-2019-6639

This CVE involves an undisclosed vulnerability in specific versions of F5's BIG-IP (AFM, PEM) that can be exploited for XSS attacks.

What is CVE-2019-6639?

The vulnerability in BIG-IP (AFM, PEM) versions 11.5.1-14.1.0.5 enables stored XSS attacks in TMUI pages for AFM and PEM Subscriber management.

The Impact of CVE-2019-6639

The vulnerability allows malicious resource administrators to store XSS, leading to potential attacks.
It affects the control plane exclusively and cannot be accessed through the data plane.

Technical Details of CVE-2019-6639

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability exists in TMUI pages for AFM and PEM Subscriber management.
It enables stored cross-site scripting (XSS) attacks.

Affected Systems and Versions

BIG-IP (AFM, PEM) versions 11.5.1-14.1.0.5 are affected.

Exploitation Mechanism

Exploiting this vulnerability requires a malicious resource administrator to store the XSS.

Mitigation and Prevention

Protecting systems from CVE-2019-6639 is crucial for maintaining security.

Immediate Steps to Take

Apply vendor-provided patches promptly.
Monitor network traffic for any signs of exploitation.
Restrict access to the affected TMUI pages.

Long-Term Security Practices

Regularly update and patch all software and systems.
Conduct security training to educate administrators on XSS prevention.

Patching and Updates

Stay informed about security updates from F5 and apply them as soon as they are available.