A vulnerability has been discovered in Microsoft Windows, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to a boundary error in the HTML Help ActiveX control (hhctrl.ocx) when handling the "Image" property. This can be exploited to cause a buffer overflow by setting an overly long string multiple times for the property.
Successful exploitation allows execution of arbitrary code.
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Subject: Windows HTML Help ActiveX Control Memory Corruption
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