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Posted to mapreduce-dev@hadoop.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2010/08/05 00:42:17 UTC

[jira] Created: (MAPREDUCE-1994) Linux task-controller determines its own path insecurely

Linux task-controller determines its own path insecurely
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                 Key: MAPREDUCE-1994
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1994
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: security, task-controller
    Affects Versions: 0.22.0
            Reporter: Todd Lipcon
            Priority: Critical


The task-controller uses argv[0] to determine its own path, and then calls stat() on that. Instead it should stat("/proc/self/exe") directly. This is important since argv[0] can be spoofed to point to another program and thus either fool the autodetection of HADOOP_HOME or evade various permissions checks.

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