CVE-2026-34548 iccDEV XML转换工具未定义行为漏洞

// Conceptual Proof of Concept for the Integer Conversion Issue // This code demonstrates how a negative signed integer is implicitly converted // to an unsigned integer, leading to logic errors or crashes. #include <stdio.h> #include <stdint.h> // Simulating the vulnerable logic in iccToXml void parse_icc_tag(int tag_size) { // Vulnerability: Implicit conversion of signed int to unsigned 32-bit int uint32_t buffer_size = tag_size; printf("Input (signed): %d\n", tag_size); printf("Converted (unsigned): %u\n", buffer_size); // If the converted value is used for allocation or looping, it causes UB/DoS if (buffer_size > 0xFFFFFFF) { printf("[!] Exploit Triggered: Value is too large/negative converted to huge positive.\n"); // In a real scenario, this might lead to an allocation failure or buffer overflow // causing a Denial of Service (Availability Impact: High). } } int main() { // Attack vector: Passing a negative value to the function printf("--- Testing CVE-2026-34548 Scenario ---\n"); parse_icc_tag(-1); return 0; }