Vue 2.7.3 represents a minor version update to the popular JavaScript framework, building upon the solid foundation of Vue 2.7.2. While both versions share the core characteristics of a reactive, component-oriented view layer ideal for modern web interfaces, a closer examination reveals subtle yet important distinctions that can impact developers.
The most immediate difference lies in the version numbers themselves, signaling an incremental improvement. Digging into the dependencies, we observe that @vue/compiler-sfc has been bumped from version 2.7.2 to 2.7.3, likely indicating refinements and bug fixes within the single-file component compilation process. This could translate to enhanced performance or improved handling of specific component structures.
Other than that the versions seem the same.
Developers considering upgrading or incorporating Vue into their projects should note the release dates. Vue 2.7.3 was released on July 6, 2022, a day after 2.7.2 thus the latest version incorporates the most recent fixes. The dist object reveals a slight increase in unpackedSize from 4782518 to 4786878 bytes, suggesting small additions or modifications to the core library. While seemingly insignificant, these changes collectively contribute to the overall stability and refinement of the Vue framework. Consequently, opting for Vue 2.7.3 ensures developers work with the most up-to-date and potentially optimized iteration of Vue 2.
All the vulnerabilities related to the version 2.7.3 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.