@nuxt/vite-builder version 3.15.2 is a minor update over 3.15.1, designed to enhance the Vite bundler integration within Nuxt 3 projects. The core functionality remains consistent, offering a performant and efficient build process leveraging Vite's capabilities such as rapid hot module replacement (HMR) and optimized production builds, making it ideal for developers focused on speed and modern web development practices.
Key changes reside in the updated dependencies. Notably, "h3" sees a bump from version ^1.13.0 to ^1.13.1. "mlly" updates from version ^1.7.3 to ^1.7.4, "@nuxt/kit" goes from "3.15.1" to "3.15.2", "consola" jumps from ^3.3.3 to ^3.4.0, "postcss" goes from ^8.4.49 to ^8.5.1, and "pkg-types" goes from ^1.3.0 to ^1.3.1. Also "rollup" goes from ^4.29.1 to ^4.30.1. These updates likely include bug fixes, performance improvements, and potentially new features within those specific packages. While seemingly minor, these dependency upgrades contribute to a more stable and refined build process, reducing potential compatibility issues or unexpected errors experienced by developers.
Developers already using @nuxt/vite-builder in their Nuxt projects should consider upgrading to 3.15.2 to benefit from these incremental improvements. The peer dependency of Vue remains at "^3.3.4", ensuring compatibility for those using Vue 3. This new version ensures you are running more optimised and stable code for your Nuxt 3 project. The file size increased slightly from 76634 to 76837.
All the vulnerabilities related to the version 3.15.2 of the package
Opening a malicious website while running a Nuxt dev server could allow read-only access to code
Nuxt allows any websites to send any requests to the development server and read the response due to default CORS settings.
While Vite patched the default CORS settings to fix https://github.com/vitejs/vite/security/advisories/GHSA-vg6x-rcgg-rjx6, nuxt uses its own CORS handler by default (https://github.com/nuxt/nuxt/pull/23995).
https://github.com/nuxt/nuxt/blob/7d345c71462d90187fd09c96c7692f306c90def5/packages/vite/src/client.ts#L257-L263
That CORS handler sets Access-Control-Allow-Origin: *
.
[!IMPORTANT]
If on an affected version, it may be possible to opt-out of the default Nuxt CORS handler by configuringvite.server.cors
.
nuxt dev
.http://localhost:3000/_nuxt/app.vue
(fetch('http://localhost:3000/_nuxt/app.vue')
) from a different origin page.Users with the default server.cors option using Vite builder may get the source code stolen by malicious websites
/__nuxt_vite_node__/manifest
/ /__nuxt_vite_node__/module
also seems to have Access-Control-Allow-Origin: *
, so it maybe also possible to exploit that handler.
https://github.com/nuxt/nuxt/blob/7d345c71462d90187fd09c96c7692f306c90def5/packages/vite/src/vite-node.ts#L39
Although I didn't find a valid module id.
Note that this handler is probably also vulnerable to DNS rebinding attacks as I didn't find any host header checks.
esbuild enables any website to send any requests to the development server and read the response
esbuild allows any websites to send any request to the development server and read the response due to default CORS settings.
esbuild sets Access-Control-Allow-Origin: *
header to all requests, including the SSE connection, which allows any websites to send any request to the development server and read the response.
https://github.com/evanw/esbuild/blob/df815ac27b84f8b34374c9182a93c94718f8a630/pkg/api/serve_other.go#L121 https://github.com/evanw/esbuild/blob/df815ac27b84f8b34374c9182a93c94718f8a630/pkg/api/serve_other.go#L363
Attack scenario:
http://malicious.example.com
).fetch('http://127.0.0.1:8000/main.js')
request by JS in that malicious web page. This request is normally blocked by same-origin policy, but that's not the case for the reasons above.http://127.0.0.1:8000/main.js
.In this scenario, I assumed that the attacker knows the URL of the bundle output file name. But the attacker can also get that information by
/index.html
: normally you have a script tag here/assets
: it's common to have a assets
directory when you have JS files and CSS files in a different directory and the directory listing feature tells the attacker the list of files/esbuild
SSE endpoint: the SSE endpoint sends the URL path of the changed files when the file is changed (new EventSource('/esbuild').addEventListener('change', e => console.log(e.type, e.data))
)The scenario above fetches the compiled content, but if the victim has the source map option enabled, the attacker can also get the non-compiled content by fetching the source map file.
npm i
npm run watch
fetch('http://127.0.0.1:8000/app.js').then(r => r.text()).then(content => console.log(content))
in a different website's dev tools.Users using the serve feature may get the source code stolen by malicious websites.