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  1. Puppet
  2. PUP-7483

YAML.load can be called on arbitrary input

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: PUP 4.10.1
    • Component/s: None
    • Labels:
      None
    • Template:
    • Team:
      Agent
    • Story Points:
      3
    • CVE-ID:
      CVE-2017-2295
    • Sprint:
      Agent 2017-05-03
    • Release Notes:
      Security Fix
    • Release Notes Summary:
      An authenticated agent could make a catalog request with facts encoded in YAML. The puppetmaster/server did not properly validate and reject the request, resulting in the server loading arbitrary objects, which could lead to remote code execution.
    • QA Risk Assessment:
      Automate
    • QA Risk Assessment Reason:
      Security risk, but easily tested

      Description

      The compiler will extract facts from the POST, and will deserialize using whatever format the user specifies. As a result, an attacker with a valid agent cert can cause the master to execute YAML.load on user specified input.

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              Assignee:
              Unassigned Unassigned
              Reporter:
              josh Josh Cooper
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                Created:
                Updated:
                Resolved:

                  Zendesk Support