Dswsbobje in SAP BusinessObjects Enterprise XI 3.2 generates different error messages depending on whether the Login field corresponds to a valid username, which allows remote attackers to enumerate account names via a login SOAPAction to the dswsbobje/services/session URI.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2010-3955
http://spl0it.org/files/talks/source_barcelona10/Hacking%20SAP%20BusinessObjects.pdf