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https://issues.apache.org/jira/browse/SLING-5288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15000193#comment-15000193
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Bertrand Delacretaz commented on SLING-5288:
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Thanks [~alexander.klimetschek] for your suggestions, good ideas indeed!
I have implemented them and also added a RegexpClassAcceptor, with both white
and black lists, so more flexible but less efficient than the
WhitelistClassAcceptor.
> Restrict which classes can be deserialized
> ------------------------------------------
>
> Key: SLING-5288
> URL: https://issues.apache.org/jira/browse/SLING-5288
> Project: Sling
> Issue Type: Bug
> Components: General
> Reporter: Bertrand Delacretaz
>
> To avoid a recently reported Java deserialization vulnerability [1], we
> should restrict which classes are accepted when deserializing binaries.
> I have created a prototype SafeObjectInputStream at [2], which refuses to
> operate on classes that are outside a whitelist.
> We probably also need a wrapper for ObjectInputStreams provided by the
> environment, that looks a bit harder to create, for now we can already
> discuss this prototype to see if we want to pursue the idea.
> [1]
> https://blogs.apache.org/foundation/entry/apache_commons_statement_to_widespread
> [2]
> https://svn.apache.org/repos/asf/sling/whiteboard/bdelacretaz/safe-object-input-stream
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