The Kerberos/MapReduce security functionality in Apache Hadoop 0.20.203.0 through 0.20.205.0, 0.23.x before 0.23.2, and 1.0.x before 1.0.2, as used in Cloudera CDH CDH3u0 through CDH3u2, Cloudera hadoop-0.20-sbin before 0.20.2+923.197, and other products, allows remote authenticated users to impersonate arbitrary cluster user accounts via unspecified vectors.
Cloudera Manager 3.7.x before 3.7.5 and Service and Configuration Manager 3.5, when Kerberos is not enabled, does not properly install taskcontroller.cfg, which allows remote authenticated users to impersonate arbitrary user accounts via unspecified vectors, a different vulnerability than CVE-2012-1574.