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FreeBSD: VID-77687355-52AA-11EA-B115-643150D3111D (CVE-2020-7942): puppet6 -- Arbitrary Catalog Retrieval

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FreeBSD: VID-77687355-52AA-11EA-B115-643150D3111D (CVE-2020-7942): puppet6 -- Arbitrary Catalog Retrieval

Severity
4
CVSS
(AV:N/AC:L/Au:S/C:P/I:N/A:N)
Published
02/18/2020
Created
03/26/2020
Added
03/24/2020
Modified
03/24/2020

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 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.

Solution(s)

  • freebsd-upgrade-package-puppet6

References

  • CVE-2020-7942

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