Microsoft Server Message Block (SMB) is vulnerable to a buffer handling flaw when processing incoming SMB packets that may lead to remote code execution.
Server Message Block is a protocol which allows sharing of files, printers, serial ports, and other abstractions. The SMB protocol is supported on many platforms and architectures, including many Microsoft products.
The Microsoft Server Message Block implementation contains a flaw in incoming SMB packet validation that may result in a buffer receiving inappropriate data. An attacker may send a specially-crafted packet to the vulnerable host and be able to execute arbitrary code on the host after exploiting the incoming packet processing flaw.
A remote unauthenticated attacker with the ability to send specially-crafted SMB packets to a vulnerable host may be able to execute arbitrary code on that system. The attacker-supplied code would be run in the context of Local System, resulting in a complete compromise of the system.
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Thanks to Microsoft for providing information on this issue, who in turn thank Qualys for reporting the vulnerability.
This document was written by Ken MacInnis.
|Date First Published:||2005-06-14|
|Date Last Updated:||2005-06-14 22:36 UTC|