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CVE-2020-7942

MEDIUM
6.5
CVSS Score
Published: February 19, 2020 at 08:52 PM UTC
Updated: June 17, 2026 at 03:25 AM UTC
2 products affected across 1 vendorPuppetPuppet Agent

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.8%

Description

Previously, Puppet operated on a model that a node with a valid certificate was entitled to all information in the system and that a compromised certificate allowed access to everything in the infrastructure. When a node's catalog falls back to the `default` node, the catalog can be retrieved for a different node by modifying facts for the Puppet run. This issue can be mitigated by setting `strict_hostname_checking = true` in `puppet.conf` on your Puppet master. Puppet 6.13.0 and 5.5.19 changes the default behavior for strict_hostname_checking from false to true. It is recommended that Puppet Open Source and Puppet Enterprise users that are not upgrading still set strict_hostname_checking to true to ensure secure behavior. Affected software versions: Puppet 6.x prior to 6.13.0 Puppet Agent 6.x prior to 6.13.0 Puppet 5.5.x prior to 5.5.19 Puppet Agent 5.5.x prior to 5.5.19 Resolved in: Puppet 6.13.0 Puppet Agent 6.13.0 Puppet 5.5.19 Puppet Agent 5.5.19

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Puppet· Puppet
95%
5.5 ≤ v < 5.5.195.5.0 ≤ v < 5.5.196 ≤ v < 6.13.06.0.0 ≤ v < 6.13.0
Vendor states this is fixed in 5.5.19 (unaffected)
Vendor states this is fixed in 6.13.0 (unaffected)
Puppet Agent· Puppet
95%
5.5 ≤ v < 5.5.195.5.0 ≤ v < 5.5.196 ≤ v < 6.13.06.0.0 ≤ v < 6.13.0
Vendor states this is fixed in 5.5.19 (unaffected)
Vendor states this is fixed in 6.13.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://puppet.com/security/cve/CVE-2020-7942/

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-295

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