Vue.js saw a minor but important update with the release of version 2.0.1 shortly after the major 2.0.0 release. Both versions share the core DNA of a reactive, component-oriented view layer ideal for crafting modern web interfaces. Developers familiar with Vue will find the core architecture remains consistent.
The upgrade from 2.0.0 to 2.0.1 presents a minimal shift in the development landscape. Examining the devDependencies reveals essentially identical tooling. Packages like buble, karma, eslint, webpack, and rollup form the foundation for building and testing Vue applications, and their versions are consistent. For developers, this means the build process and testing configurations remain unchanged. Key dependencies for supporting features like ES6 transpilation and flow type checking are also preserved. While seemingly a small step, such point releases typically address bug fixes and minor refinements. Version 2.0.1 ensures a smoother development experience and increased stability compared to 2.0.0.. The release dates indicate a quick turnaround, suggesting the update likely resolves immediate issues found after the larger 2.0.0 launch. This focus on swift correction speaks to the project's commitment to a reliable framework that Vue's users can trust to build their applications.
All the vulnerabilities related to the version 2.0.1 of the package
ReDoS vulnerability in vue package that is exploitable through inefficient regex evaluation in the parseHTML function
The ReDoS can be exploited through the parseHTML function in the html-parser.ts file. This flaw allows attackers to slow down the application by providing specially crafted input that causes inefficient processing of regular expressions, leading to excessive resource consumption.
To demonstrate this vulnerability, here's an example. In a Vue client-side application, create a new Vue instance with a template string that includes a <script> tag but closes it incorrectly with something like </textarea>.
new Vue({
el: '#app',
template: '
<div>
Hello, world!
<script>${'<'.repeat(1000000)}</textarea>
</div>'
});
Next, set up a basic HTML page (e.g., index.html) to load this JavaScript and mount the Vue instance:
<!DOCTYPE html>
<html>
<head>
<title>My first Vue app</title>
</head>
<body>
<div id=\"app\">Loading...</div>
</body>
</html>
When you visit the app in your browser at http://localhost:3000, you'll notice that the time taken to parse and mount the Vue application increases significantly due to the ReDoS vulnerability, demonstrating how the flaw can affect performance.