Harris Ormed Self Service before 2019.1.4 allows an authenticated user to view W-2 forms belonging to other users via an arbitrary empNo value to the ORMEDMIS/Data/PY/T4W2Service.svc/RetrieveW2EntriesForEmployee URI, thus exposing sensitive information including employee tax information, social security numbers, home addresses, and more.
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
Link | Tags |
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https://github.com/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2019-0011/FEYE-2019-0011.md | third party advisory |