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CVE-2017-2295

Status Candidate

Overview

Versions of Puppet prior to 4.10.1 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.

Related Files

Ubuntu Security Notice USN-3308-1
Posted Jun 5, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3308-1 - Dennis Rowe discovered that Puppet incorrectly handled the search path. A local attacker could use this issue to possibly execute arbitrary code. It was discovered that Puppet incorrectly handled YAML deserialization. A remote attacker could possibly use this issue to execute arbitrary code on the master. This update is incompatible with agents older than 3.2.2. Various other issues were also addressed.

tags | advisory, remote, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2014-3248, CVE-2017-2295
SHA-256 | 4402c8d968a030d3ce3901bd15dcdede2b25e19641c46bed14092fd04e93b5fe
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