Vue 2.7.2 is a minor release update to the popular Vue.js framework, building upon the existing features and improvements introduced in version 2.7.1. Both versions offer the same core benefits: a reactive and component-oriented approach to building user interfaces ideal for modern web applications. Developers leveraging Vue can create dynamic, interactive experiences with ease.
The key difference between Vue 2.7.2 and 2.7.1 lies in internal updates and bug fixes. While the core functionality remains consistent, version 2.7.2 addresses potential issues and enhances stability. Developers should always prioritize using the latest patch version within a series for optimal performance and security. Reviewing the Vue.js changelog for the specific changes included in 2.7.2 is recommended.
Both versions depend on the same suite of tools: compiler @vue/compiler-sfc to parse Vue single-file components, and a long list of dev dependencies that allows developers to work with Typescript, testing, bundling, and much more.
For developers already using Vue 2.7.1, upgrading to 2.7.2 is a straightforward process, generally involving updating the package version in their project's package.json file and running npm install or yarn install. Developers starting new Vue 2 projects should always opt for the latest available 2.7.x version (at the time of creation), due to the advantages of having the latest bug fixes and improvements by default. With its MIT license, Vue remains a free and open-source choice for web development.
All the vulnerabilities related to the version 2.7.2 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.