ext/common/ServerInstanceDir.h in Phusion Passenger gem before 4.0.6 for Ruby allows local users to gain privileges or possibly change the ownership of arbitrary directories via a symlink attack on a directory with a predictable name in /tmp/.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libapache2-mod-passenger": "4.0.37-2", "ruby-passenger": "4.0.37-2", "ruby-passenger-doc": "4.0.37-2" } ] }