CVE-2017-6136 Denial of service in BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, GTM, Link Controller, PEM, WebSafe

Medium 5.9 Published 21 Dec 2017 Updated 16 Sep 2024

Attackers can cause a denial of service in F5 BIG-IP TMM by sending specific traffic patterns when TCP Fast Open and Tail Loss Probe are enabled.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2017-6136?

CVE-2017-6136 is a medium-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, published on 21 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, GTM, Link Controller, PEM and WebSafe software version 13.0.0 and 12.0.0 - 12.1.2, undisclosed traffic patterns sent to BIG-IP virtual servers, with the TCP Fast Open and Tail Loss Probe options enabled in the associated TCP profile, may cause a disruption of service to the Traffic Management Microkernel (TMM).

Weakness: CWE-20

Which versions are affected by CVE-2017-6136?

It affects 11 products.

Products include F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager, F5 Big-Ip Dns and 5 more.

How do I fix CVE-2017-6136?

No fix has been published for CVE-2017-6136 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2017-6136 being exploited?

There is no known exploitation of CVE-2017-6136 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-2c52-8jcv-8h7p.