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  Microsoft Security Bulletin MS03-039: Buffer Overrun In RPCSS Service Could Allow Code Execution (824146)
Time: 16:52 EST/21:52 GMT | News Source: ActiveWin.com | Posted By: Todd Richardson

There are three identified vulnerabilities in the part of RPCSS Service that deals with RPC messages for DCOM activation- two that could allow arbitrary code execution and one that could result in a denial of service. The flaws result from incorrect handling of malformed messages. These particular vulnerabilities affect the Distributed Component Object Model (DCOM) interface within the RPCSS Service. This interface handles DCOM object activation requests that are sent from one machine to another.

An attacker who successfully exploited these vulnerabilities could be able to run code with Local System privileges on an affected system, or could cause the RPCSS Service to fail. The attacker could then be able to take any action on the system, including installing programs, viewing, changing or deleting data, or creating new accounts with full privileges. To exploit these vulnerabilities, an attacker could create a program to send a malformed RPC message to a vulnerable system targeting the RPCSS Service.

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