[jira] [Resolved] (MAPREDUCE-1991) taskcontroller allows stealing permissions on any local file

["Todd Lipcon (Resolved) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1991?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Todd Lipcon resolved MAPREDUCE-1991.
------------------------------------

    Resolution: Invalid

This was fixed as a side effect of MAPREDUCE-2378, I believe. I verified it's fixed in 0.20-security and in MR2's LinuxContainerExecutor
                
> 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: 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 0.22.0
>
>         Attachments: mapreduce-1991-v2.txt, 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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