Vue version 2.3.4, released on June 8, 2017, is a minor update to the popular Vue.js framework, building upon the foundation laid by version 2.3.3, which was released on May 9, 2017. Both versions share the same core description: a reactive, component-oriented view layer designed for modern web interfaces, empowering developers to create dynamic and engaging user experiences. Diving into the nuances, a comparison of the *devDependencies* reveals that both depend on a wide array of tools crucial for development, testing, and building Vue applications. Key dependencies like *webpack*, *rollup*, *eslint*, and various *karma-* testing tools remain consistent between the two versions, indicating a stable and reliable development environment. The *devDependencies* sections in both versions are identical, suggesting that the core tooling and build process did not undergo any alteration. Therefore, a potential upgrade between these two versions would likely be seamless with no changes to tooling or build. Vue remains a strong choice for developers building modern web applications and interactive user interfaces.
All the vulnerabilities related to the version 2.3.4 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.