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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1991) taskcontroller allows stealing permissions on any local file
Date Tue, 03 Aug 2010 02:32:18 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12894796#action_12894796
] 

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

(note this is only possible in the case where the task-controller has been misconfigured so
that a local user can run it - but still worth fixing imo)

> 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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