CVE-2018-5541 Denial of service in BIG-IP (ASM)
Attackers can cause excessive CPU usage and denial of service in F5 BIG-IP ASM by sending HTTP requests with an unusually large number of parameters.
- 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-2018-5541?
CVE-2018-5541 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
When F5 BIG-IP ASM 13.0.0-13.1.0.1, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, or 11.5.1-11.5.6 is processing HTTP requests, an unusually large number of parameters can cause excessive CPU usage in the BIG-IP ASM bd process.
Weakness: CWE-400
Which versions are affected by CVE-2018-5541?
It affects 1 product.
Products include F5 Big-Ip Application Security Manager.
How do I fix CVE-2018-5541?
No fix has been published for CVE-2018-5541 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-2018-5541 being exploited?
There is no known exploitation of CVE-2018-5541 in the wild and no public exploit code.
Other vulnerabilities in F5 Big-Ip Application Security Manager
Sources
Also known as GHSA-r9ff-j36c-4rfp.