rgod has discovered a vulnerability in 4XEM VatDecoder, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to a boundary error in the VATDecoder.VatCtrl.1 ActiveX control (VATDecoder.dll) when handling strings assigned to the "Url" property. This can be exploited to cause a stack-based buffer overflow by assigning an overly long string to the affected property.
Successful exploitation allows execution of arbitrary code.
The vulnerability is confirmed in VATDecoder.dll version 220.127.116.11 and reported in version 18.104.22.168. Other versions may also be affected.
Solution: Set the kill-bit for the affected ActiveX control.
Provided and/or discovered by: rgod
Original Advisory: http://www.milw0rm.com/exploits/5193
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Subject: 4XEM VatDecoder VatCtrl Class ActiveX Control "Url" Property Buffer Overflow
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