lib/puppet/defaults.rb in Puppet 2.7.x before 2.7.18, and Puppet Enterprise before 2.5.2, uses 0644 permissions for last_run_report.yaml, which allows local users to obtain sensitive configuration information by leveraging access to the puppet master server to read this file.

References

• https://nvd.nist.gov/vuln/detail/CVE-2012-3866
• puppetlabs/puppet@fd44bf5
• https://bugzilla.redhat.com/show_bug.cgi?id=839135
• http://lists.opensuse.org/opensuse-updates/2012-07/msg00036.html
• http://puppetlabs.com/security/cve/cve-2012-3866/
• http://www.debian.org/security/2012/dsa-2511
• http://www.ubuntu.com/usn/USN-1506-1
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puppet/CVE-2012-3866.yml
• https://www.puppet.com/security/cve/cve-2012-3866-lastrunreportyaml-world-readable