Oracle toplink mapping workBench uses a weak encryption algorithm for passwords, which allows local users to decrypt the passwords.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-2126
http://www.securityfocus.com/bid/9515
http://www.securityfocus.com/archive/82/351719
http://www.securityfocus.com/archive/1/352315/30/21430/threaded
http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=803&lngWId=5