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https://issues.apache.org/jira/browse/HADOOP-13957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15819855#comment-15819855
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Allen Wittenauer commented on HADOOP-13957:
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Is there a use case for something writable in the path? Right now to own the
box just means installing a trojan bash.
> prevent bad PATHs
> -----------------
>
> Key: HADOOP-13957
> URL: https://issues.apache.org/jira/browse/HADOOP-13957
> Project: Hadoop Common
> Issue Type: New Feature
> Components: security
> Affects Versions: 3.0.0-alpha2
> Reporter: Allen Wittenauer
>
> Apache Hadoop daemons should fail to start if the shell PATH contains world
> writable directories or '.' (cwd). Doing so would close an attack vector on
> misconfigured systems.
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