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Microsoft Security Bulletin MS03-025: Flaw in Windows Message Handling through Utility Manager Could Enable Privilege Elevation (Q822679) | |
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| Time: 19:05 EST/00:05 GMT | News Source: ActiveWin.com | Posted By: Todd Richardson | ||
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There is a flaw in the way that Utility Manager handles Windows messages. Windows messages provide a way for interactive processes to react to user events (for example, keystrokes or mouse movements) and communicate with other interactive processes. A security vulnerability results because the control that provides the list of accessibility options to the user does not properly validate Windows messages sent to it. It's possible for one process in the interactive desktop to use a specific Windows message to cause the Utility Manager process to execute a callback function at the address of its choice. Because the Utility Manager process runs at higher privileges than the first process, this would provide the first process with a way of exercising those higher privileges. | ||
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