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Bug 1452651 - (CVE-2017-2295) CVE-2017-2295 puppet: Unsafe YAML deserialization
CVE-2017-2295 puppet: Unsafe YAML deserialization
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
impact=important,public=20170511,repo...
: Security
Depends On: 1452653 1460091 1452654 1452655 1469897
Blocks: 1452658
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Reported: 2017-05-19 08:26 EDT by Andrej Nemec
Modified: 2018-06-29 18:21 EDT (History)
42 users (show)

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Fixed In Version: puppet 4.10.1, puppet agent 1.10.1
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Description Andrej Nemec 2017-05-19 08:26:27 EDT 
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 08:27:31 EDT 
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 00:26:52 EDT 
Created puppet tracking bugs for this issue:

Affects: openstack-rdo [bug 1460091]
Comment 5 Kurt Seifried 2018-03-22 14:57:09 EDT 
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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