apache hadoop is vulnerable to privilege escalation. A malicious user who could escalate to yarn user could possibly run arbitrary commands as root user.
www.securityfocus.com/bid/108518
issues.apache.org/jira/browse/HBASE-22499
lists.apache.org/thread.html/0b8d58e02dbd0fb8bf7320c514fe58da1d6728bdc150f1ba04e0d9fc@%3Cissues.hbase.apache.org%3E
lists.apache.org/thread.html/17084c09e6dedf60efe08028b429c92ffd28aacc28454e4fa924578a@%3Cgeneral.hadoop.apache.org%3E
lists.apache.org/thread.html/a0164b87660223a2d491f83c88f905fe1a9fa8dc795148d9b0d968c8@%3Cdev.hbase.apache.org%3E
lists.apache.org/thread.html/a97c53a81e639ca2fc7b8f61a4fcd1842c2a78544041244a7c624727@%3Cissues.hbase.apache.org%3E
lists.apache.org/thread.html/r4dddf1705dbedfa94392913b2dad1cd2d1d89040facd389eea0b3510@%3Ccommits.druid.apache.org%3E
lists.apache.org/thread.html/rb21df54a4e39732ce653d2aa5672e36a792b59eb6717f2a06bb8d02a@%3Ccommits.druid.apache.org%3E
security.netapp.com/advisory/ntap-20190617-0001/