CVE-2017-6137 Denial of service in BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, PSM, WebAccelerator, WebSafe

Medium 5.9 Published 9 May 2017 Updated 5 Aug 2024

Attackers can cause a denial of service in F5 BIG-IP Traffic Management Microkernel by sending specific traffic patterns when SYN cookie protection is 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-2017-6137?

CVE-2017-6137 is a medium-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, published on 9 May 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, Edge Gateway, GTM, Link Controller, PEM, PSM, WebAccelerator, and WebSafe 11.6.1 HF1, 12.0.0 HF3, 12.0.0 HF4, and 12.1.0 through 12.1.2, undisclosed traffic patterns received while software SYN cookie protection is engaged may cause a disruption of service to the Traffic Management Microkernel (TMM) on specific platforms and configurations.

Which versions are affected by CVE-2017-6137?

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 Domain Name System and 5 more.

How do I fix CVE-2017-6137?

No fix has been published for CVE-2017-6137 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-2017-6137 being exploited?

There is no known exploitation of CVE-2017-6137 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-7wq2-9xxh-9rcq.