priestmaster has discovered a vulnerability in Microsoft Visual Studio, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to a design error that allows program code within the "Load" event of a user-defined control to be automatically executed when a project containing a form that uses the malicious control is opened. This can be exploited to execute arbitrary program code.
Successful exploitation requires that the user is e.g. tricked into opening a Solution file in a malicious Visual Studio project.
The vulnerability has been confirmed in Microsoft Visual C# 2005 Express Edition. Other versions may also be affected.
Note: It has also possible to modify Visual Studio's ".dsp" project files to include arbitrary post-build commands that are executed when the project is built.
Solution: Do not open or build Visual Studio project files from untrusted sources.
Provided and/or discovered by: priestmaster
Additional information by:
Donnie Werner, Exploitlabs
Original Advisory: Microsoft KB841189:
Team Priestmasters Research Facility:
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Subject: Microsoft Visual Studio User Control Load Event Vulnerability
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