USN-1372-1: Puppet vulnerabilities

23 February 2012

puppet vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.10
  • Ubuntu 10.04 LTS


Puppet could be made to overwrite files and run programs with administrator privileges.

Software Description

  • puppet - Centralized configuration management


It was discovered that Puppet did not drop privileges when executing commands as different users. If an attacker had control of the execution manifests or the executed command, this could be used to execute code with elevated group permissions (typically root). (CVE-2012-1053)

It was discovered that Puppet unsafely opened files when the k5login type is used to manage files. A local attacker could exploit this to overwrite arbitrary files and escalate privileges. (CVE-2012-1054)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 11.10
puppet-common - 2.7.1-1ubuntu3.5
Ubuntu 11.04
puppet-common - 2.6.4-2ubuntu2.8
Ubuntu 10.10
puppet-common - 2.6.1-0ubuntu2.6
Ubuntu 10.04 LTS
puppet-common - 0.25.4-2ubuntu6.6

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.