CVE-2017-6136 Explained : Impact and Mitigation
Discover the impact of CVE-2017-6136, a Denial of Service vulnerability in F5 BIG-IP LTM, AAM, AFM, and more. Learn about affected versions, exploitation details, and mitigation steps.
F5 Networks, Inc. disclosed a vulnerability in certain versions of BIG-IP software that could lead to service disruption due to specific traffic patterns. The issue affects versions 13.0.0 and 12.0.0 - 12.1.2.
Understanding CVE-2017-6136
This CVE involves a Denial of Service vulnerability in F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, GTM, Link Controller, PEM, and WebSafe software.
What is CVE-2017-6136?
The vulnerability in F5 BIG-IP software versions 13.0.0 and 12.0.0 - 12.1.2 can cause service disruption to the Traffic Management Microkernel (TMM) when specific traffic patterns are directed towards BIG-IP virtual servers with certain TCP profile options enabled.
The Impact of CVE-2017-6136
The exploitation of this vulnerability may result in a Denial of Service condition, affecting the availability of services provided by the affected F5 products.
Technical Details of CVE-2017-6136
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability arises when undisclosed traffic patterns are sent to BIG-IP virtual servers with TCP Fast Open and Tail Loss Probe options enabled, potentially disrupting the Traffic Management Microkernel (TMM).
Affected Systems and Versions
- Products: BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, GTM, Link Controller, PEM, WebSafe
- Versions: 13.0.0, 12.0.0 - 12.1.2
Exploitation Mechanism
The disruption occurs when specific traffic patterns are directed towards BIG-IP virtual servers with enabled TCP Fast Open and Tail Loss Probe options in the associated TCP profile.
Mitigation and Prevention
To address CVE-2017-6136, users should take immediate steps and implement long-term security practices.
Immediate Steps to Take
- Disable TCP Fast Open and Tail Loss Probe options in the associated TCP profile.
- Monitor network traffic for any unusual patterns.
Long-Term Security Practices
- Regularly update and patch F5 BIG-IP software to the latest versions.
- Implement network segmentation and access controls to limit exposure to potential threats.
Patching and Updates
Apply the latest patches and updates provided by F5 Networks to mitigate the vulnerability and enhance the security of the affected systems.