Vue 2.3.3 is a minor update to the popular JavaScript framework for building user interfaces, following closely after version 2.3.2. Both versions share the same core description: a reactive, component-oriented view layer designed for modern web development. Analyzing the devDependencies section reveals a practically identical set of tools used for development, testing, and building the library. This includes essential packages like webpack for bundling, eslint for code linting, karma and jasmine for testing, and rollup for module bundling. Key babel plugins like babel-plugin-transform-vue-jsx and babel-helper-vue-jsx-merge-props remain staples for JSX support.
While the dependency lists are the same, the release dates mark the actual difference. Vue 2.3.3 was released on May 9, 2017, subsequent to the release of Vue 2.3.2 on May 2, 2017. This very close succession suggests that version 2.3.3 most likely addresses minor bug fixes, performance improvements, or documentation updates discovered shortly after the 2.3.2 release. Developers should consider upgrading to Vue 2.3.3 to ensure they’re benefiting from the latest stability enhancements and potential security patches. Given the limited time between releases, the upgrade is generally expected to be smooth with minimal breaking changes. Always consult the official Vue.js changelog for detailed release notes about specific fixes.
All the vulnerabilities related to the version 2.3.3 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.