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SUSE: CVE-2020-7942: SUSE Linux Security Advisory

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SUSE: CVE-2020-7942: SUSE Linux Security Advisory

Severity
4
CVSS
(AV:N/AC:L/Au:S/C:P/I:N/A:N)
Published
02/19/2020
Created
02/10/2022
Added
02/04/2022
Modified
02/04/2022

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

Solution(s)

  • suse-upgrade-puppet
  • suse-upgrade-puppet-server

References

  • SUSE-SU-2020:1057-1
  • CVE-2020-7942

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