ESB-2017.1980 - [SUSE] puppet: Execute arbitrary code/commands - Remote/unauthenticated 2017-08-10

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.1980
             SUSE Security Update: Security update for puppet
                              10 August 2017

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           puppet
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-2295  

Reference:         ESB-2017.1415
                   ESB-2017.1340

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2017/suse-su-20172113-1/

- --------------------------BEGIN INCLUDED TEXT--------------------

   SUSE Security Update: Security update for puppet
______________________________________________________________________________

Announcement ID:    SUSE-SU-2017:2113-1
Rating:             important
References:         #1040151 
Cross-References:   CVE-2017-2295
Affected Products:
                    SUSE Linux Enterprise Module for Advanced Systems Management 12
                    SUSE Linux Enterprise Desktop 12-SP3
                    SUSE Linux Enterprise Desktop 12-SP2
______________________________________________________________________________

   An update that fixes one vulnerability is now available.

Description:

   This update for puppet fixes the following issues:

   Security issue fixed:
   - CVE-2017-2295: Possible code execution vulnerability where an attacker
     could force YAML deserialization in an unsafe manner. In default, this
     update breaks a backwards compatibility with Puppet agents older than
     3.2.2 as the SLE12 master doesn't support other fact formats than pson
     in default anymore. In order to allow users to continue using their
     SLE12 master/SLE11 agents setup and fix CVE-2017-2295 for the others, a
     new puppet master boolean option "dangerous_fact_formats" was added.
     When it's set to true it enables using dangerous fact formats (e.g.
     YAML). When it's set to false, only PSON fact format is accepted.
     (bsc#1040151)


Patch Instructions:

   To install this SUSE Security Update use YaST online_update.
   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Module for Advanced Systems Management 12:

      zypper in -t patch SUSE-SLE-Module-Adv-Systems-Management-12-2017-1310=1

   - SUSE Linux Enterprise Desktop 12-SP3:

      zypper in -t patch SUSE-SLE-DESKTOP-12-SP3-2017-1310=1

   - SUSE Linux Enterprise Desktop 12-SP2:

      zypper in -t patch SUSE-SLE-DESKTOP-12-SP2-2017-1310=1

   To bring your system up-to-date, use "zypper patch".


Package List:

   - SUSE Linux Enterprise Module for Advanced Systems Management 12 (ppc64le s390x x86_64):

      puppet-3.8.5-15.3.3
      puppet-server-3.8.5-15.3.3

   - SUSE Linux Enterprise Desktop 12-SP3 (x86_64):

      puppet-3.8.5-15.3.3

   - SUSE Linux Enterprise Desktop 12-SP2 (x86_64):

      puppet-3.8.5-15.3.3


References:

   https://www.suse.com/security/cve/CVE-2017-2295.html
   https://bugzilla.suse.com/1040151

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