USN-1506-1: Puppet vulnerabilities

12 July 2012

puppet vulnerabilities

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

  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.04 LTS

Summary

Several security issues were fixed in Puppet.

Software Description

  • puppet - Centralized configuration management

Details

It was discovered that Puppet incorrectly handled certain HTTP GET requests. An attacker could use this flaw with a valid client certificate to retrieve arbitrary files from the Puppet master. (CVE-2012-3864)

It was discovered that Puppet incorrectly handled Delete requests. If a Puppet master were reconfigured to allow the “Delete” method, an attacker on an authenticated host could use this flaw to delete arbitrary files from the Puppet server, leading to a denial of service. (CVE-2012-3865)

It was discovered that Puppet incorrectly set file permissions on the last_run_report.yaml file. An attacker could use this flaw to access sensitive information. This issue only affected Ubuntu 11.10 and Ubuntu 12.04 LTS. (CVE-2012-3866)

It was discovered that Puppet incorrectly handled agent certificate names. An attacker could use this flaw to create a specially crafted certificate and trick an administrator into signing a certificate that can then be used to man-in-the-middle agent nodes. (CVE-2012-3867)

Update instructions

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

Ubuntu 12.04 LTS
puppet-common - 2.7.11-1ubuntu2.1
Ubuntu 11.10
puppet-common - 2.7.1-1ubuntu3.7
Ubuntu 11.04
puppet-common - 2.6.4-2ubuntu2.10
Ubuntu 10.04 LTS
puppet-common - 0.25.4-2ubuntu6.8

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References