Unknown vulnerability in newgrp in HP-UX B.11.00, B.11.04, and B.11.11 allows local users to gain elevated privileges.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5622
https://exchange.xforce.ibmcloud.com/vulnerabilities/18577
http://www.securityfocus.com/bid/12029