On Tue, 17 Apr 2007, Michal Bucko wrote: > Function of a prototype isChecked (char*) (in toolbar.dll) is vulnerable > to buffer overrun. Arbitrary code execution might be possible.The > problem occurs when > > 767B49 MOV ECX,[EAX+140] > > data is being copied into the buffer of an insufficient size. Your advisory contains virtually no technical information that could be used to confirm the problem - but assuming Intel notation, the above MOV seems to be inconsistent with the description given. This operations loads dword from memory into a register; if this is where the application crashes, it's more likely indicative of a NULL pointer bug (if EAX is 0), or some memory allocation mishap. Cheers, /mz