Vue 2.0.7 and 2.0.6 are minor version updates of the popular JavaScript framework, focusing on bug fixes and incremental improvements rather than introducing groundbreaking new features. Both versions cater to developers building reactive, component-driven user interfaces for the web. The core functionalities remain consistent, ensuring a relatively seamless transition for those upgrading.
Examining the package.json files, one observes near-identical dependency and devDependency listings. These include essential development tools for linting (eslint), bundling (rollup, webpack), testing (karma, jasmine, nightwatch), transpilation (babel), and type checking (flow-bin, typescript). This shared infrastructure suggests a commitment to code quality and consistent development workflow across both versions.
The primary distinguishing factor lies within the release dates. Vue 2.0.7 was published approximately a day after 2.0.6, an indicator of a quick patch addressing potential issues discovered post-release of 2.0.6. Developers should prioritize using Vue 2.0.7. to ensure they're leveraging the most up-to-date and stable iteration, benefiting from any bug fixes or minor performance tweaks implemented between the two versions. For those already on 2.0.6, upgrading presents a low-risk opportunity to enhance application stability.
All the vulnerabilities related to the version 2.0.7 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.