The process-management implementation in Cisco TelePresence Video Communication Server (VCS) Expressway X8.5.2 allows local users to gain privileges by terminating a firestarter.py supervised process and then triggering the restart of a process by the root account, aka Bug ID CSCuv12272.
http://www.securitytracker.com/id/1033751
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151006-vcs