CVE-2018-5503 Denial of service in BIG-IP (PEM)
Attackers can cause a denial of service by sending crafted pages to a virtual server with specific PEM policies, affecting F5 BIG-IP administrators.
- 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-2018-5503?
CVE-2018-5503 is a high-severity denial of service vulnerability in F5 Big-Ip Policy Enforcement Manager, published on 22 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
On F5 BIG-IP versions 13.0.0 - 13.1.0.3 or 12.0.0 - 12.1.3.1, TMM may restart when processing a specifically crafted page through a virtual server with an associated PEM policy that has content insertion as an action.
Weakness: CWE-20
Which versions are affected by CVE-2018-5503?
It affects 1 product.
Products include F5 Big-Ip Policy Enforcement Manager.
How do I fix CVE-2018-5503?
No fix has been published for CVE-2018-5503 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-2018-5503 being exploited?
There is no known exploitation of CVE-2018-5503 in the wild and no public exploit code.
Other vulnerabilities in F5 Big-Ip Policy Enforcement Manager
Sources
Also known as GHSA-mwr4-5q6m-7g7q.