CVE-2017-6166 Denial of service in BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Link Controller, PEM, and WebSafe
Attackers can crash the Traffic Management Microkernel by sending fragmented packets to a virtual server with a FastL4 profile, causing service disruption.
- 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-2017-6166?
CVE-2017-6166 is a medium-severity denial of service vulnerability in F5 Big-Ip Analytics, published on 22 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Link Controller, PEM, and WebSafe software 12.0.0 to 12.1.1, in some cases the Traffic Management Microkernel (TMM) may crash when processing fragmented packets. This vulnerability affects TMM through a virtual server configured with a FastL4 profile. Traffic processing is disrupted while TMM restarts. If the affected BIG-IP system is configured as part of a device group, it will trigger a failover to the peer device.
Weakness: CWE-415
Which versions are affected by CVE-2017-6166?
It affects 11 products.
Products include F5 Big-Ip Afm, F5 Big-Ip Analytics, F5 Big-Ip Apm, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Asm, F5 Big-Ip Dns and 5 more.
How do I fix CVE-2017-6166?
No fix has been published for CVE-2017-6166 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-2017-6166 being exploited?
There is no known exploitation of CVE-2017-6166 in the wild and no public exploit code.
Other vulnerabilities in F5 Big-Ip Analytics
Sources
Also known as GHSA-j35v-h5m8-p59m.