CVE-2018-5539 Denial of service in BIG-IP (ASM)
Attackers can cause the BIG-IP ASM bd process to restart, resulting in a denial of service for the application security module.
- 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-2018-5539?
CVE-2018-5539 is a high-severity denial of service vulnerability in F5 Big-Ip Application Security Manager, published on 25 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Under certain conditions, on F5 BIG-IP ASM 13.0.0-13.1.0.7, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, 11.5.1-11.5.6, or 11.2.1, when processing CSRF protections, the BIG-IP ASM bd process may restart and produce a core file.
Which versions are affected by CVE-2018-5539?
It affects 1 product.
Products include F5 Big-Ip Application Security Manager.
How do I fix CVE-2018-5539?
No fix has been published for CVE-2018-5539 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-2018-5539 being exploited?
There is no known exploitation of CVE-2018-5539 in the wild and no public exploit code.
Other vulnerabilities in F5 Big-Ip Application Security Manager
Sources
Also known as GHSA-5h3w-qcfh-9hrf.