CVE-2019-6680 : What You Need to Know

A hardware appliance unresponsiveness vulnerability affecting F5 BIG-IP versions 11.5.2-15.0.1 when processing traffic through specific virtual servers.

Understanding CVE-2019-6680

This CVE involves a Denial of Service (DoS) vulnerability on F5 BIG-IP devices.

What is CVE-2019-6680?

This CVE identifies a flaw in F5 BIG-IP versions 11.5.2-15.0.1 that can cause hardware appliances to become unresponsive when processing traffic through certain virtual servers.

The Impact of CVE-2019-6680

The vulnerability can lead to a DoS condition, potentially disrupting network operations and services.

Technical Details of CVE-2019-6680

The following technical aspects are associated with CVE-2019-6680:

Vulnerability Description

Hardware appliances may stop responding when processing traffic through specific virtual servers targeting a FastL4 virtual server on affected BIG-IP versions.

Affected Systems and Versions

F5 BIG-IP versions 15.0.0-15.0.1, 14.1.0-14.1.2, 14.0.0-14.0.1, 13.1.0-13.1.3.2, 12.1.0-12.1.5, and 11.5.2-11.6.5.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending crafted traffic through specific virtual servers, triggering the unresponsiveness of hardware appliances.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-6680 vulnerability:

Immediate Steps to Take

Apply vendor-supplied patches or updates to affected BIG-IP devices.
Implement network segmentation to minimize the impact of potential attacks.

Long-Term Security Practices

Regularly monitor and audit network traffic for anomalies.
Keep systems up to date with the latest security patches and firmware releases.

Patching and Updates

Stay informed about security advisories from F5 and promptly apply recommended patches to mitigate the vulnerability.