CVE-2019-6635 : What You Need to Know

A privilege escalation vulnerability in F5 BIG-IP versions 11.5.1-14.1.0.5 allows users to bypass Appliance mode restrictions.

Understanding CVE-2019-6635

This CVE involves a privilege escalation issue in F5 BIG-IP products.

What is CVE-2019-6635?

In versions 11.5.1-14.1.0.5 of F5 BIG-IP, users with specific roles can circumvent Appliance mode restrictions.

The Impact of CVE-2019-6635

The vulnerability enables unauthorized users to elevate their privileges, potentially compromising system security.

Technical Details of CVE-2019-6635

This section delves into the technical aspects of the CVE.

Vulnerability Description

Users with Administrator or Resource Administrator roles in affected versions can bypass Appliance mode restrictions.

Affected Systems and Versions

BIG-IP 14.1.0-14.1.0.5
BIG-IP 14.0.0-14.0.0.4
BIG-IP 13.0.0-13.1.1.4
BIG-IP 12.1.0-12.1.4
BIG-IP 11.6.1-11.6.3.4
BIG-IP 11.5.1-11.5.8

Exploitation Mechanism

Unauthorized users exploit their roles to bypass Appliance mode restrictions.

Mitigation and Prevention

Protect your systems from CVE-2019-6635 with these strategies.

Immediate Steps to Take

Apply vendor-supplied patches promptly.
Restrict access to privileged roles.
Monitor system logs for suspicious activities.

Long-Term Security Practices

Regularly update and patch F5 BIG-IP devices.
Implement the principle of least privilege for user roles.
Conduct security training for system administrators.

Patching and Updates

Ensure timely installation of security patches and updates for F5 BIG-IP products.