Polycom RealPresence Resource Manager (aka RPRM) before 8.4 allows local users with access to the plcm account to gain privileges via a script in /var/polycom/cma/upgrade/scripts, related to a sudo misconfiguration.
packetstormsecurity.com/files/132463/Polycom-RealPresence-Resource-Manager-RPRM-Disclosure-Traversal.html
seclists.org/fulldisclosure/2015/Jun/81
www.securityfocus.com/archive/1/535852/100/0/threaded
www.securityfocus.com/bid/75432
support.polycom.com/global/documents/support/documentation/Security_Center_Post_for_RPRM_CVEs.pdf
www.exploit-db.com/exploits/37449/