Vue 2.5.19 represents a minor version update over its predecessor, Vue 2.5.18, within the popular progressive JavaScript framework. Both versions share the same core description, emphasizing a reactive, component-oriented view layer tailored for modern web interfaces. Examining the underlying package details reveals subtle distinctions that could be of interest to developers. The devDependencies remain largely consistent, indicating a focus on refining existing tooling rather than introducing radical changes in the development environment. Both versions leverage a comprehensive suite of tools including Babel, Webpack, Rollup, and ESLint, ensuring a robust and streamlined development workflow. Key aspects like licensing (MIT), repository location, and the author remain unchanged, underscoring the continuous evolution of the core project under its established leadership.
A noteworthy difference resides in the dist section. Vue 2.5.19, despite having the same fileCount of 218, exhibits a slightly smaller unpackedSize of 3266103 compared to Vue 2.5.18's 3268035. This suggests potential optimizations in code size or asset management. The release dates also demarcate the versions, with Vue 2.5.19 being released on 2018-12-09T21:26:20.931Z, just two days after Vue 2.5.18's release. Developers considering an upgrade should investigate specific commit logs and release notes for potential bug fixes, performance enhancements, or minor feature tweaks included in Vue 2.5.19, as these insights are crucial for informed decision-making and ensuring compatibility within existing Vue.js projects.
All the vulnerabilities related to the version 2.5.19 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.