Vulnerability in Puppet Server

CVE-2018-11751

Previous versions of Puppet Agent didn't verify the peer in the SSL connection prior to downloading the CRL. This issue is resolved in Puppet Agent 6.4.0.

Vulnerability class: Improper Certificate Validation

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.006 (47.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2018-11751: held from 0.006 to 0.006.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

  • Puppet Server
  • Puppet Agent, — versions Puppet Agent 6.x prior to 6.4.0, Puppet 6.x prior to 6.4.x

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2018-11751?
CVE-2018-11751 is a medium-severity vulnerability in Puppet Server, classified under Improper Certificate Validation. CVSS score: 5.4/10. Published 2019-12-16.
How severe is CVE-2018-11751?
Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2018-11751 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.