Vue 2.1.0 marks a subtle but important progression from version 2.0.8 in the popular JavaScript framework for building user interfaces. While the core description remains the same – a reactive, component-oriented view layer for modern web interfaces – examining the release dates reveals a quick iteration, with only two days separating the versions. Developers considering upgrading should note that the dependencies field remains empty in both versions, suggesting no added runtime dependencies impacting project size.
The devDependencies,used for development and testing, shows no added or removed dependencies between the versions, and all of them seem to have the same version. This suggests that the core focus of the 2.1.0 release isn't on new features, but rather on bug fixes, performance improvements, or internal refactoring.
Both versions are licensed under the MIT license, ensuring broad usability in various project types. The author remains Evan You, maintaining continuity in the project's direction. The package repository points to the same GitHub repository, indicating that these are indeed versions of the same core project. The upgrade from 2.0.8 to 2.1.0 is likely a smoothing out of existing functionality rather than a disruptive change, therefore the upgrade should be straightforward and not impact the existing codebase using Vue.
All the vulnerabilities related to the version 2.1.0 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.