Vue version 2.0.2 represents a minor iterative update following closely on the heels of version 2.0.1. Both versions provide a reactive, component-oriented view layer designed for building modern web interfaces. Key aspects such as the core description, license (MIT), repository location, and author remain consistent, indicating a stable and well-maintained project. The primary distinction lies in the release date, with 2.0.2 being released approximately two weeks after 2.0.1, suggesting bug fixes, performance improvements, or small feature enhancements. Developers utilizing Vue should appreciate the consistent development practices demonstrated by frequent releases.
The extensive list of devDependencies, identical across both versions, signals a robust development environment with comprehensive testing and tooling. This includes bundlers like Rollup and Webpack, testing frameworks like Karma and Jasmine, and linting tools like ESLint, guaranteeing code quality and compatibility. Specific packages like karma-coverage indicate efforts to write tests, ensure greater code quality, reducing possible bugs, and increasing confidence during development and future updates. Packages like rollup-plugin-flow-no-whitespace ensure code clarity and help prevent possible issues with the build process.
While the changes between 2.0.1 and 2.0.2 are likely incremental, staying up-to-date with the latest minor version is generally recommended to benefit from the latest improvements and bug fixes. The presence of tools like nightwatch suggests that the team is focusing on end-to-end testing which makes sure the application functions according to the expected behaviour from the point of view of the user. This helps reassure developers that, when updating version, they can avoid having issues with the integration of the view layer code and the rest of the code base.
All the vulnerabilities related to the version 2.0.2 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.