Hello, Users of Apache Hadoop should be aware of a security vulnerability recently discovered, as described by the following CVE. In particular, please note the "Users affected", "Versions affected", and "Mitigation" sections. Best, Aaron -- Aaron T. Myers Software Engineer, Cloudera CVE-2012-1574: Apache Hadoop user impersonation vulnerability Severity: Critical Vendor: The Apache Software Foundation Versions Affected: Hadoop 0.20.203.0, 0.20.204.0, and 0.20.205.0 Hadoop 1.0.0 to 1.0.1 Hadoop 0.23.0 to 0.23.1. Users affected: Users who have enabled Hadoop's Kerberos/MapReduce security features. Impact: Vulnerability allows an authenticated malicious user to impersonate any other user on the cluster. Mitigation: 0.20.20x.x and 1.0.x users should upgrade to 1.0.2 0.23.x users should upgrade to 0.23.2 when it becomes available Credit: This issue was discovered by Aaron T. Myers of Cloudera.
