Vue 2.1.5 is a minor version update to the popular JavaScript framework, building upon version 2.1.4. Both versions share the same core goal: providing a reactive, component-oriented view layer to simplify modern web interface development. The description and core functionalities remain consistent, emphasizing the framework's ease of use and modular design.
Examining the devDependencies, reveals subtle changes mainly focused on the tooling used for development, testing and building the library. While most dependency versions remain identical, a notable difference lies in the replacement of babel-plugin-coverage in version 2.1.4 with babel-plugin-istanbul in version 2.1.5. Both are used for measuring code coverage, indicating a shift in the preferred tool for this task, potentially for better integration or accuracy.
For developers, upgrading from 2.1.4 to 2.1.5 should be relatively seamless. As a patch version, it primarily addresses bug fixes and minor improvements, without introducing breaking API changes. The move from babel-plugin-coverage to babel-plugin-istanbul is important to keep in mind if custom code coverage configuration exists on the project. The core APIs and component structure remain consistent, ensuring a smooth upgrade path and continued focus on building reactive user interfaces with Vue.js. Always review the official changelog for a comprehensive list of changes and any potential edge cases.
All the vulnerabilities related to the version 2.1.5 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.