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Microsoft Security Bulletin MS03-024: Buffer Overrun in Windows Could Lead to Data Corruption (Q817606) | |
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| Time: 19:03 EST/00:03 GMT | News Source: ActiveWin.com | Posted By: Todd Richardson | ||
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A flaw exists in the way that the server validates the parameters of an SMB packet. When a client system sends an SMB packet to the server system, it includes specific parameters that provide the server with a set of "instructions." In this case, the server is not properly validating the buffer length established by the packet. If the client specifies a buffer length that is less than what is needed, it can cause the buffer to be overrun.
By sending a specially crafted SMB packet request, an attacker could cause a buffer overrun to occur. If exploited, this could lead to data corruption, system failure, or-in the worst case- it could allow an attacker to run the code of their choice.
An attacker would need a valid user account and would need to be authenticated by the server to exploit this flaw.
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