Bug 1452651 (CVE-2017-2295) - CVE-2017-2295 puppet: Unsafe YAML deserialization
Summary: CVE-2017-2295 puppet: Unsafe YAML deserialization
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2017-2295
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1452653 1452654 1452655 1460091 1469897
Blocks: 1452658
TreeView+ depends on / blocked
 
Reported: 2017-05-19 12:26 UTC by Andrej Nemec
Modified: 2021-10-21 11:53 UTC (History)
39 users (show)

Fixed In Version: puppet 4.10.1, puppet agent 1.10.1
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Last Closed: 2021-10-21 11:53:33 UTC
Embargoed:

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Description Andrej Nemec 2017-05-19 12:26:27 UTC 
It was found that Puppet will deserialize data off the wire (from the agent to the server, in this case) with a attacker-specified format. This could be used to force YAML deserialization in an unsafe manner, which would lead to remote code execution. This change constrains the format of data on the wire to PSON or safely decoded YAML.

External References:

https://puppet.com/security/cve/cve-2017-2295
Comment 1 Andrej Nemec 2017-05-19 12:27:31 UTC 
Created puppet tracking bugs for this issue:

Affects: epel-7 [bug 1452653]
Affects: fedora-all [bug 1452654]
Affects: openshift-1 [bug 1452655]
Comment 3 Summer Long 2017-06-09 04:26:52 UTC 
Created puppet tracking bugs for this issue:

Affects: openstack-rdo [bug 1460091]
Comment 5 Kurt Seifried 2018-03-22 18:57:09 UTC 
This issue has been addressed in the following products:

  Red Hat Satellite 6.3 for RHEL 7

Via RHSA-2018:0336 https://access.redhat.com/errata/RHSA-2018:0336
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