Microsoft SQL Server is vulnerable to a buffer overflow by calling the procedure xp_displayparamstmt with long parameter data. This procedure calls the srv_paraminfo API, which does not check the buffer length before copying the paramters.
To exploit this vulnerability, the user must first logon to the SQL server. This requires knowledge of a valid user id and password. Once logged on, the malicious user can execute arbitrary commands with the privileges of the account used by the SQL server.
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