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Date: Wed, 4 Aug 2010 18:51:19 -0400 (EDT)
From: "Todd Lipcon (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Subject: [jira] Commented: (MAPREDUCE-1991) taskcontroller allows stealing
 permissions on any local file
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-1991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12895459#action_12895459 ] 

Todd Lipcon commented on MAPREDUCE-1991:
----------------------------------------

Filed MAPREDUCE-1994 for fixing the way it determines its own path.

Is someone already working on a patch to remove the -l option, or should I grab this jira?

> 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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