Vue 2.2.2 marks a subtle but important step forward from version 2.2.1 in the ongoing development of this popular JavaScript framework for building user interfaces. Both versions share the same core philosophy: offering a reactive and component-oriented approach ideal for modern web development. The description, license, repository, and author all remain consistent, indicative of a stable project committed to its foundational principles. The noticeable difference lies in the release timing, with version 2.2.2 arriving on March 9, 2017, subsequent to 2.2.1's February 26, 2017 release.
While the provided data doesn't explicitly detail functional changes, the updated releaseDate suggests bug fixes, performance improvements, or minor feature enhancements. Developers should consult the official Vue.js changelog for specific details on what was addressed or introduced in this incremental update. Both versions come equipped with an extensive suite of devDependencies, highlighting Vue's robust testing and development environment. This includes tools for linting (ESLint), bundling (Rollup, Webpack), testing (Karma, Jasmine, Nightwatch), and transpilation (Babel, Buble), ensuring code quality and browser compatibility. The dependencies also demonstrate a commitment to modern JavaScript features and practices, making Vue a progressive choice for web applications.
All the vulnerabilities related to the version 2.2.2 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.