Integer signedness error in the SQLConnectW function in an ODBC API
(odbc32.dll) in Microsoft Data Access Components (MDAC) 2.8 SP1 and
SP2, and Windows Data Access Components (WDAC) 6.0, allows remote
attackers to execute arbitrary code via a long string in the Data
Source Name (DSN) and a crafted szDSN argument, which bypasses a
signed comparison and leads to a buffer overflow, aka "DSN Overflow
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