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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] Created: (JCR-2919) Security of token base authentication
Date Wed, 16 Mar 2011 15:27:29 GMT
Security of token base authentication
-------------------------------------

                 Key: JCR-2919
                 URL: https://issues.apache.org/jira/browse/JCR-2919
             Project: Jackrabbit Content Repository
          Issue Type: Bug
          Components: jackrabbit-core, security
    Affects Versions: 2.3.0
            Reporter: Michael Dürig


Token based authentication as implemented with JCR-2851 seems to exhibit a security issue:
the token returned by the server consists of the identifier of a (newly created) node in the
repository. An attacker who is able to guess (or acquire by other means i.e. via log files)
that identifier will be granted access to the repository. Worse yet, JCR-2857 introduces sequential
node ids. Guessing is a piece of cake in such a setup.

I think we should decouple authentication secrets from node ids. A simple solution would be
to store the secret in a token attribute and delegate generation of the secret to a dedicated
handler. Such a handler can then use a secure random generator, private/public key encryption
or whatever other method that is deemed appropriate to generate the authentication secret.


Initial discussion see: http://markmail.org/thread/aspetgvmj2qud25a

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