Vue 2.7.5 is a minor release following version 2.7.4 in the popular Vue 2 series, a reactive, component-oriented view layer for web interfaces. Both versions share the same core description and license, indicating that the fundamental purpose and usage terms of the library remain consistent. The key area of differentiation lies in the dependency updates specifically in @vue/compiler-sfc from 2.7.4 to 2.7.5, likely signifying bug fixes or minor feature enhancements within the single-file component compilation process that developers utilize to create reusable UI elements. Examining the dates reveals a relatively short interval between releases, suggesting the .5 release addresses immediate needs.
Developers will appreciate the continued efforts to maintain and refine Vue 2, ensuring stability and ongoing support for existing projects. Although the dependency changes are minimal, they often address critical edge cases or performance improvements within the compiler. The unpacked size and file count differences between the .4 and .5 releases suggest code refactoring in the updated version . For projects already using Vue 2, upgrading to 2.7.5 is recommended to leverage any potential bug fixes and performance improvements in single-file components.
All the vulnerabilities related to the version 2.7.5 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.