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.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1776
Reference (s):
- BID:83259
- URL: http://www.securityfocus.com/bid/83259
- MLIST:[hadoop-general] 20160215 CVE-2015-1776: Apache Hadoop MapReduce, disclosure of encrypted data
- URL: http://mail-archives.apache.org/mod_mbox/hadoop-general/201602.mbox/%3CCAGCyb56CPgQMcxZ7jP87SfM5OKGx+E49DtrzCTQ6+nQf2a4nSA@mail.gmail.com%3E