WindowsXPServicepack2introducedsomenewsecuritymeasuresinanattempttopreventtheuseofoverwrittenheapheaderstodoarbitrarybytewriting.Thismethodofexploitingheapoverflows,andtheprotectionofferedbyservicepack2,iswidelyknownandhasbeenwelldocumentedinthepast.Whatthispaperwillattempttoe