Puppet 2.6.x before 2.6.14 and 2.7.x before 2.7.11, and Puppet Enterprise Users 1.0, 1.1, 1.2.x, 2.0.x before 2.0.3, when managing a user login file with the k5login resource type, allows local users to gain privileges via a symlink attack on .k5login.The change_user method in the SUIDManager in Puppet 2.6.x before 2.6.14 and 2.7.x before 2.7.11, and Puppet Enterprise Users 1.0, 1.1, 1.2.x, 2.0.x before 2.0.3 does not properly manage group privileges, which allows local users to gain privileges via vectors related to the change_user not dropping supplementary groups in certain conditions, changes to the eguid without associated changes to the egid, or the addition of the real gid to supplementary groups.