Puppet before 3.3.3 and 3.4 before 3.4.1 and Puppet Enterprise (PE) before 2.8.4 and 3.1 before 3.1.1 allows local users to overwrite arbitrary files via a symlink attack on unspecified files.
http://www.ubuntu.com/usn/USN-2077-1
http://www.debian.org/security/2013/dsa-2831
http://secunia.com/advisories/56254