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From "Ravi Gummadi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1991) taskcontroller allows stealing permissions on any local file
Date Mon, 09 Aug 2010 06:53:19 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12896463#action_12896463
] 

Ravi Gummadi commented on MAPREDUCE-1991:
-----------------------------------------

display_usage( ) function has "Usage: task-controller [-l logfile] user command command-args".
Would you please remove [-l logfile] here also ?

> 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
>            Assignee: Todd Lipcon
>            Priority: Blocker
>         Attachments: mapreduce-1991.txt
>
>
> 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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