hadoop-mapreduce-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Vinod K V (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1994) Linux task-controller determines its own path insecurely
Date Thu, 05 Aug 2010 06:16:17 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12895565#action_12895565
] 

Vinod K V commented on MAPREDUCE-1994:
--------------------------------------

I think you meant HADOOP_CONF_DIR.

It is documented to set permissions on task-controller to be as strict as "6050 root mapred".
That should avoid creating hard links to the binary, no?

Just curious, an example of argv[0] spoof?

> Linux task-controller determines its own path insecurely
> --------------------------------------------------------
>
>                 Key: MAPREDUCE-1994
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1994
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: security, task-controller
>    Affects Versions: 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Critical
>
> The task-controller uses argv[0] to determine its own path, and then calls stat() on
that. Instead it should stat("/proc/self/exe") directly. This is important since argv[0] can
be spoofed to point to another program and thus either fool the autodetection of HADOOP_HOME
or evade various permissions checks.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message