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https://issues.apache.org/jira/browse/MAPREDUCE-1991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12894985#action_12894985
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Allen Wittenauer commented on MAPREDUCE-1991:
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Or do we want to #ifdef this? [getexecname() under Solaris]
> taskcontroller allows stealing permissions on any local file
> ------------------------------------------------------------
>
> Key: MAPREDUCE-1991
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1991
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: task-controller
> Affects Versions: 0.21.0, 0.22.0
> Reporter: Todd Lipcon
> Priority: Blocker
>
> The linux task-controller setuid binary allows a malicious user to chmod any
> file on the system to 644 (and as a side effect appends some junk to the end)
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