CVE-2018-10868 Denial of service in redhat-certification

High 7.5 Published 26 May 2021 Updated 5 Aug 2024

An unauthenticated attacker can cause a denial of service via a Billion Laugh Attack by exploiting recursive entity definitions in XMLRPC responses.

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-2018-10868?

CVE-2018-10868 is a high-severity denial of service vulnerability in redhat-certification, published on 26 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

redhat-certification 7 does not properly restrict the number of recursive definitions of entities in XML documents, allowing an unauthenticated user to run a "Billion Laugh Attack" by replying to XMLRPC methods when getting the status of an host.

Weakness: CWE-776, CWE-400

Which versions are affected by CVE-2018-10868?

It affects 1 product.

Products include Redhat Certification.

How do I fix CVE-2018-10868?

No fix has been published for CVE-2018-10868 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-2018-10868 being exploited?

There is no known exploitation of CVE-2018-10868 in the wild and no public exploit code.

Sources

Also known as GHSA-9gcv-g5q9-f633.