CVE-2020-7943 Information disclosure in Puppet Enterprise

High 7.5 Published 11 Mar 2020 Updated 4 Aug 2024

Attackers on the local network can access sensitive metrics data from Puppet Server and PuppetDB endpoints due to insufficient access controls.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2020-7943?

CVE-2020-7943 is a high-severity vulnerability in Puppet Puppet Enterprise, published on 11 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Puppet Server and PuppetDB provide useful performance and debugging information via their metrics API endpoints. For PuppetDB this may contain things like hostnames. Puppet Server reports resource names and titles for defined types (which may contain sensitive information) as well as function names and class names. Previously, these endpoints were open to the local network. PE 2018.1.13 & 2019.5.0, Puppet Server 6.9.2 & 5.3.12, and PuppetDB 6.9.1 & 5.2.13 disable trapperkeeper-metrics /v1 metrics API and only allows /v2 access on localhost by default. This affects software versions: Puppet Enterprise 2018.1.x stream prior to 2018.1.13 Puppet Enterprise prior to 2019.5.0 Puppet Server prior to 6.9.2 Puppet Server prior to 5.3.12 PuppetDB prior to 6.9.1 PuppetDB prior to 5.2.13 Resolved in: Puppet Enterprise 2018.1.13 Puppet Enterprise 2019.5.0 Puppet Server 6.9.2 Puppet Server 5.3.12 PuppetDB 6.9.1 PuppetDB 5.2.13

Weakness: CWE-276

Which versions are affected by CVE-2020-7943?

It affects 3 products.

Products include Puppet Puppet Enterprise, Puppet Puppet Server, Puppet Puppetdb.

How do I fix CVE-2020-7943?

Upgrade to a fixed version.

Is CVE-2020-7943 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-7943 exists.

Public exploit code: 1 Nuclei template.

All Puppet Puppet Enterprise vulnerabilities

Sources

Also known as DEBIAN-CVE-2020-7943, GHSA-xv72-7w5r-cqjw, UBUNTU-CVE-2020-7943.