Description
Apache Hadoop 2.6.x encrypts intermediate data generated by a MapReduce job and stores it along with the encryption key in a credentials file on disk when the Intermediate data encryption feature is enabled, which allows local users to obtain sensitive information by reading the file.
Remediation
References
http://www.securityfocus.com/bid/83259
http://mail-archives.apache.org/mod_mbox/hadoop-general/201602.mbox/%3CCAGCyb56CPgQMcxZ7jP87SfM5OKGx+E49DtrzCTQ6+nQf2a4nSA%40mail.gmail.com%3E