Puppet 2.7.x before 2.7.5, 2.6.x before 2.6.11, and 0.25.x allows local users to modify the permissions of arbitrary files via a symlink attack on the SSH authorized_keys file.
groups.google.com/group/puppet-announce/browse_thread/thread/91e3b46d2328a1cb
lists.fedoraproject.org/pipermail/package-announce/2011-October/068053.html
lists.fedoraproject.org/pipermail/package-announce/2011-October/068061.html
lists.fedoraproject.org/pipermail/package-announce/2011-October/068093.html
www.debian.org/security/2011/dsa-2314
www.ubuntu.com/usn/USN-1223-1
www.ubuntu.com/usn/USN-1223-2
github.com/puppetlabs/puppet
github.com/puppetlabs/puppet/commit/88512e880bd2a03694b5fef42540dc7b3da05d30
github.com/puppetlabs/puppet/commit/b29b1785d543a3cea961fffa9b3c15f14ab7cce0
github.com/rubysec/ruby-advisory-db/blob/master/gems/puppet/CVE-2011-3870.yml
nvd.nist.gov/vuln/detail/CVE-2011-3870
puppet.com/security/cve/cve-2011-3870