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https://issues.apache.org/jira/browse/SOLR-13993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16988516#comment-16988516
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ASF subversion and git services commented on SOLR-13993:
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Commit e6728cdf64472e91186b3cc080d2d1c5de774196 in lucene-solr's branch
refs/heads/branch_8x from Robert Muir
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=e6728cd ]
SOLR-13993: sandbox velocity template render (if security manager is enabled)
The solr permissions are weak sauce due to the huge number of features,
third-party dependencies, etc.
Hence they have access to do many things. For "scripting" such as velocity we
have to look at a more aggressive stance:
Step 1: Can we wrap a sandbox around the whole goddamn thing and call it a day?
Step 2: Let's separate the "engine" from "untrusted code" and only be an
asshole to the latter.
Step 3: Java's security is shit, Lets contain that classloader and whitelist
access.
> sandbox velocity template render
> --------------------------------
>
> Key: SOLR-13993
> URL: https://issues.apache.org/jira/browse/SOLR-13993
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Robert Muir
> Priority: Major
> Fix For: 8.4
>
> Attachments: SOLR-13993.patch, SOLR-13993.patch, SOLR-13993.patch,
> SOLR-13993.patch
>
>
> This thing seems dangerous :)
> Making the whole solr secure is a whole nother thing: (see e.g. SOLR-13991
> and we haven't even gotten started). Its pretty difficult to convert whole
> large app to work securely. It is going to take time.
> In the meantime, if we have things that might do something dangerous, and
> security manager is enabled, we can put them into a special little sandbox
> and throw away the key: for example we can intentionally discard permissions
> we don't need so they can't launch stuff, if we really don't trust them, we
> can start filtering what classes classloader will load.
> This isn't that crazy at all to do, e.g. your web browser does similar tricks
> to try to sandbox specific parts that might do something unexpected and cause
> security issue.
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