UnixAuthenticationService in Apache Ranger 1.2.0 was updated to correctly handle user input to avoid Stack-based buffer overflow. Versions prior to 1.2.0 should be upgraded to 1.2.0
cwiki.apache.org/confluence/display/RANGER/Vulnerabilities+found+in+Ranger
lists.apache.org/thread.html/r04bc435a92911de4b52d2b98f169bd7cf2e8bbeb53b03788df8f932c@%3Cdev.ranger.apache.org%3E
lists.apache.org/thread.html/rd88077a781ef38f7687c100f93992f4dda8aa101925050c4af470998@%3Cdev.ranger.apache.org%3E
seclists.org/oss-sec/2018/q4/11