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https://issues.apache.org/jira/browse/SOLR-13991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16986476#comment-16986476
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Robert Muir commented on SOLR-13991:
------------------------------------
somehow my build had leaked two entire jvms both spinning at 100% cpu for the
last few hours (I think after hitting OOM each), that explains some of my
frustration.
> clean up permissions in solr-tests.policy
> -----------------------------------------
>
> Key: SOLR-13991
> URL: https://issues.apache.org/jira/browse/SOLR-13991
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Robert Muir
> Priority: Major
> Attachments: SOLR-13991.patch, SOLR-13991.patch, SOLR-13991.patch,
> SOLR-13991.patch
>
>
> The solr-tests.policy is currently way too lenient. Its useful for tests but
> pretty worthless at defending against any attacker "for real"
> For example imagine i can execute arbitrary java-ish code:
> {code}
> Runtime.getRuntime().exec("id");
> {code}
> With a security manager enabled, I'd get an exception like this:
> java.security.AccessControlException: access denied ("java.io.FilePermission"
> "<<ALL FILES>>" "execute")
> Because the current policy is so lenient and has wildcard RuntimePermission,
> the next thing i'd try (disable security manager, then launch process) would
> happily execute:
> {code}
> System.setSecurityManager(null);Runtime.getRuntime().exec("id");
> {code}
> That's because the current wildcard permission allows
> {{RuntimePermission("setSecurityManager")}}.
> There are other variants I could use, some explained by java's docs:
> https://docs.oracle.com/javase/7/docs/api/java/lang/RuntimePermission.html
> It will take time and pain to clean up this stuff: e.g. fixing code and maybe
> even third-party dependencies, but gotta start somewhere. I think splitting
> up the wildcards is a good first step :)
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