Description
In Apache Hadoop 2.6.x before 2.6.5 and 2.7.x before 2.7.3, a remote user who can authenticate with the HDFS NameNode can possibly run arbitrary commands with the same privileges as the HDFS service.
Remediation
References
http://mail-archives.apache.org/mod_mbox/hadoop-general/201611.mbox/%3CCAA0W1bTbUmUUSF1rjRpX-2DvWutcrPt7TJSWUcSLg1F0gyHG1Q%40mail.gmail.com%3E
http://www.securityfocus.com/bid/94574