CVE-2016-9252 Denial of service in F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, PSM, WebAccelerator, WebSafe

High 7.5 Published 27 Mar 2017 Updated 6 Aug 2024

Remote attackers can cause a denial of service in F5 BIG-IP devices by exploiting improper handling of IPv6 minimum path MTU options.

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-2016-9252?

CVE-2016-9252 is a high-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, published on 27 Mar 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Traffic Management Microkernel (TMM) in F5 BIG-IP before 11.5.4 HF3, 11.6.x before 11.6.1 HF2 and 12.x before 12.1.2 does not properly handle minimum path MTU options for IPv6, which allows remote attackers to cause a denial-of-service (DoS) through unspecified vectors.

Weakness: CWE-19

Which versions are affected by CVE-2016-9252?

It affects 14 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 8 more.

How do I fix CVE-2016-9252?

No fix has been published for CVE-2016-9252 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-2016-9252 being exploited?

There is no known exploitation of CVE-2016-9252 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-qwr5-xgvm-mhm6.