[
https://issues.apache.org/jira/browse/MAPREDUCE-1991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12894793#action_12894793
]
Todd Lipcon commented on MAPREDUCE-1991:
----------------------------------------
Oh wait, I misread the permissions. It actually gets chmodded a+w, meaning a
malicious user can trivially escalate to root by editing /etc/shadow or other
system wide configurations.
> 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)
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
