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https://issues.apache.org/jira/browse/MAPREDUCE-2096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12975957#action_12975957
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Todd Lipcon commented on MAPREDUCE-2096:
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Results on mapreduce-2096.2.txt:
[exec] +1 overall.
[exec]
[exec] +1 @author. The patch does not contain any @author tags.
[exec]
[exec] +1 tests included. The patch appears to include 3 new or
modified tests.
[exec]
[exec] +1 javadoc. The javadoc tool did not generate any warning
messages.
[exec]
[exec] +1 javac. The applied patch does not increase the total number
of javac compiler warnings.
[exec]
[exec] +1 findbugs. The patch does not introduce any new Findbugs
(version 1.3.9) warnings.
[exec]
[exec] +1 release audit. The applied patch does not increase the
total number of release audit warnings.
[exec]
[exec] +1 system test framework. The patch passed system test
framework compile.
Unit tests pass except for the known timeouts from trunk.
> Secure local filesystem IO from symlink vulnerabilities
> -------------------------------------------------------
>
> Key: MAPREDUCE-2096
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2096
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobtracker, security, tasktracker
> Affects Versions: 0.22.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Blocker
> Fix For: 0.22.0
>
> Attachments: mapreduce-2096-index-oob.txt, mapreduce-2096.2.txt,
> mapreduce-2096.txt, secure-files-9.txt, secure-files-authorized-jvm-fix.txt
>
>
> This JIRA is to contribute a patch developed on the private security@ mailing
> list.
> The vulnerability is that MR daemons occasionally open files that are located
> in a path where the user has write access. A malicious user may place a
> symlink in place of the expected file in order to cause the daemon to instead
> read another file on the system -- one which the attacker may not naturally
> be able to access. This includes delegation tokens belong to other users, log
> files, keytabs, etc.
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