CVE-2023-1894 Denial of service in Puppet Enterprise
Attackers can cause denial of service in Puppet Server by submitting crafted certificate names that trigger inefficient regular expression processing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-1894?
CVE-2023-1894 is a medium-severity denial of service vulnerability in Puppet Puppet Enterprise, published on 4 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A Regular Expression Denial of Service (ReDoS) issue was discovered in Puppet Server 7.9.2 certificate validation. An issue related to specifically crafted certificate names significantly slowed down server operations.
Weakness: CWE-1333
Which versions are affected by CVE-2023-1894?
It affects 2 products.
Products include Puppet Puppet Enterprise, Puppet Puppet Server.
How do I fix CVE-2023-1894?
Upgrade to a fixed version.
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-2023-1894 being exploited?
There is no known exploitation of CVE-2023-1894 in the wild and no public exploit code.
Other vulnerabilities in Puppet Puppet Enterprise
Sources
Also known as DEBIAN-CVE-2023-1894, GHSA-x5cv-mqxq-8q96, UBUNTU-CVE-2023-1894.