CVE-2020-27724 Denial of service in BIG-IP APM
Authenticated VPN users can cause resource exhaustion and denial of service on BIG-IP APM systems running multiple TMM instances.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-27724?
CVE-2020-27724 is a medium-severity denial of service vulnerability in F5 Big-Ip Access Policy Manager, published on 24 Dec 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In BIG-IP APM versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 14.1.0-14.1.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, on systems running more than one TMM instance, authenticated VPN users may consume excessive resources by sending specially-crafted malicious traffic over the tunnel.
Weakness: CWE-400
Which versions are affected by CVE-2020-27724?
It affects 1 product.
Products include F5 Big-Ip Access Policy Manager.
How do I fix CVE-2020-27724?
No fix has been published for CVE-2020-27724 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-2020-27724 being exploited?
There is no known exploitation of CVE-2020-27724 in the wild and no public exploit code.
Other vulnerabilities in F5 Big-Ip Access Policy Manager
- CVE-2023-46747 F5 BIG-IP Configuration Utility Authentication Bypass
- CVE-2022-1388 F5 BIG-IP Missing Authentication
- CVE-2021-22986 F5 BIG-IP and BIG-IQ Centralized Management iControl REST Remote Code Execution
- CVE-2021-22991 F5 BIG-IP Traffic Management Microkernel Buffer Overflow
- CVE-2020-5902 F5 BIG-IP Traffic Management User Interface (TMUI) Remote Code Execution
Sources
Also known as GHSA-m37h-4w48-299w.