Vue version 2.1.6 is a minor release following 2.1.5 in the popular progressive JavaScript framework. Both versions, built for crafting reactive, component-oriented user interfaces, share identical core descriptions, dependencies, and development dependencies. Developers familiar with Vue will find the upgrade seamless, as the fundamental aspects of the library remain consistent.
The key difference lies in the release date, with version 2.1.6 released on December 13, 2016, several hours after version 2.1.5. This suggests that version 2.1.6 likely contains bug fixes, performance improvements, or minor adjustments addressing issues identified shortly after the 2.1.5 release. While the changes may not be immediately apparent from the package metadata, developers are encouraged to review the official Vue changelog or release notes for specific details on the updates included in 2.1.6.
For developers choosing between the two, opting for the latest version (2.1.6) is generally recommended. It includes all the features and improvements of version 2.1.5 and potentially addresses any immediate bugs or stability concerns that arose. Both versions showcase a rich set of development dependencies pointing to a robust testing and development environment, with tools like Webpack, Rollup, ESLint, Karma, and Babel, assuring developers of a mature and reliable framework.
All the vulnerabilities related to the version 2.1.6 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.