CVE-2012-3376
DataNodes in Apache Hadoop 2.0.0 alpha does not check the BlockTokens of clients when Kerberos is enabled and the DataNode has checked out the same BlockPool twice from a NodeName, which might allow remote clients to read arbitrary blocks, write to blocks to which they only have read access, and have other unspecified impacts.
Date published : 2012-07-12
http://www.securityfocus.com/bid/54358
http://archives.neohapsis.com/archives/bugtraq/2012-07/0049.html