Alex Deparvu created OAK-7506:
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             Summary: Prevent user enumeration by exploiting time delay 
vulnerability
                 Key: OAK-7506
                 URL: https://issues.apache.org/jira/browse/OAK-7506
             Project: Jackrabbit Oak
          Issue Type: Improvement
          Components: security
            Reporter: Alex Deparvu
            Assignee: Alex Deparvu


Pasting here the improvement request: "If the server response is different for 
existing and not existing usernames, the attacker is able to enumerate valid 
usernames with guessing attacks. He is thereby able to focus his password 
guessing attacks to the existing accounts."

The fix for this particular issue seems trivial, at the cost of making the 
login operation slower in the case the user doesn't actually exist.



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