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https://issues.apache.org/jira/browse/MAPREDUCE-5208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13656333#comment-13656333
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Omkar Vinit Joshi commented on MAPREDUCE-5208:
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I compiled and tested this on branch-2 .. for below 2 machines.
unsecured (and native io disabled) single node mac machine and secured (native
io enabled) ubuntu.12.04 machine
> SpillRecord and ShuffleHandler should use SecureIOUtils for reading index
> file and map output
> ---------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-5208
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5208
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Omkar Vinit Joshi
> Assignee: Omkar Vinit Joshi
> Fix For: 2.0.5-beta
>
> Attachments: MAPREDUCE-5208-20130506.patch,
> MAPREDUCE-5208-20130507.patch, MAPREDUCE-5208.20130510.patch,
> MAPREDUCE-5208.20130513.branch2.update.1.patch,
> MAPREDUCE-5208.20130513.branch2.update.patch
>
>
> ShuffleHandler (map output file) and SpillRecord (index file) are reading
> file using unsecured input stream. There exists a possibility for symlink
> attack. related to YARN-578 . Creating this issue to track map reduce changes.
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