CVE-2024-34351 PoC — Next.js Server-Side Request Forgery in Server Actions

Source

https://github.com/Voorivex/CVE-2024-34351

Associated Vulnerability

Title: Next.js Server-Side Request Forgery in Server Actions (CVE-2024-34351)
Description:Next.js is a React framework that can provide building blocks to create web applications. A Server-Side Request Forgery (SSRF) vulnerability was identified in Next.js Server Actions. If the `Host` header is modified, and the below conditions are also met, an attacker may be able to make requests that appear to be originating from the Next.js application server itself. The required conditions are 1) Next.js is running in a self-hosted manner; 2) the Next.js application makes use of Server Actions; and 3) the Server Action performs a redirect to a relative path which starts with a `/`. This vulnerability was fixed in Next.js `14.1.1`.

Readme

# CVE-2024-34351
Test-bed for CVE-2024-34351: I used the latest vulnerable version of Next.js, which is 14.1.0. Set up the environment with the following command:
```bash
npm install
npm run dev
```

File Snapshot

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