Deserialization of Untrusted Data Affecting puppet package, versions <4.10.1


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.24% (65th percentile)

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  • Snyk ID SNYK-RUBY-PUPPET-472666
  • published 7 Nov 2019
  • disclosed 11 May 2017
  • credit Puppet

How to fix?

Upgrade puppet to version 4.10.1 or higher.

Overview

puppet is an automated configuration management tool.

Affected versions of this package are vulnerable to Deserialization of Untrusted Data. It allows deserializing data off the wire (from the agent to the server, in this case) with an 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.

CVSS Scores

version 3.1
Expand this section

Snyk

Recommended
8.2 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Changed
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    None