CVE-2020-27713 Denial of service in BIG-IP
Attackers can cause a denial of service by triggering a memory leak in the Traffic Management Microkernel when specific HTTP requests are processed.
- 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-2020-27713?
CVE-2020-27713 is a high-severity denial of service vulnerability in F5 Big-Ip Advanced Firewall Manager, published on 11 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In certain configurations on version 13.1.3.4, when a BIG-IP AFM HTTP security profile is applied to a virtual server and the BIG-IP system receives a request with specific characteristics, the connection is reset and the Traffic Management Microkernel (TMM) leaks memory.
Weakness: CWE-401
Which versions are affected by CVE-2020-27713?
It affects 1 product.
Products include F5 Big-Ip Advanced Firewall Manager.
How do I fix CVE-2020-27713?
No fix has been published for CVE-2020-27713 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-2020-27713 being exploited?
There is no known exploitation of CVE-2020-27713 in the wild and no public exploit code.
Other vulnerabilities in F5 Big-Ip Advanced Firewall Manager
Sources
Also known as GHSA-72qv-726v-82fq.