Vue version 2.6.3 is a minor release following 2.6.2 in the popular JavaScript framework for building user interfaces. Both versions share the same core description: a reactive, component-oriented view layer ideal for crafting modern web applications. Primarily, these releases focus on bug fixes and incremental improvements rather than introducing major new features. Developers upgrading from 2.6.2 to 2.6.3 can anticipate a more polished experience with potential enhancements to stability and performance. Package maintainers will find that 2.6.3 includes one additional file and about 11KB of extra unpacked size compared to its predecessor.
The shared "devDependencies" section underscores the comprehensive tooling ecosystem supporting Vue development. Key tools remain consistent across both versions, including build tools like Rollup and Webpack, testing frameworks like Karma and Jasmine, and linting tools like ESLint. This signifies a commitment to maintaining a robust and reliable development environment. Libraries such as Babel are used to ensure compatibility across different browsers and JavaScript environments. The consistency in these dependencies suggests that the upgrade from 2.6.2 to 2.6.3 will be seamless for most developers, minimizing compatibility issues with existing projects and workflows and ensuring overall reliability.
All the vulnerabilities related to the version 2.6.3 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.