Cross-Site Request Forgery (CSRF) in kestasjk/webdiplomacy


Reported on

Jul 23rd 2021

✍️ Description

CSRF bug when creating game

🕵️‍♂️ Proof of Concept

no csrf token checking during gamecreate .
Bellow request is vulnerable to csrf attack

POST /gamecreate.php HTTP/1.1
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:88.0) Gecko/20100101 Firefox/88.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded
Content-Length: 521
Connection: close
Upgrade-Insecure-Requests: 1


💥 Impact

csrf bug

We have contacted a member of the kestasjk/webdiplomacy team and are waiting to hear back 2 years ago
Kestas "Chris" Kuliukas validated this vulnerability 2 years ago
ranjit-git has been awarded the disclosure bounty
The fix bounty is now up for grabs
Kestas "Chris" Kuliukas marked this as fixed with commit 80d2d4 2 years ago
Kestas "Chris" Kuliukas has been awarded the fix bounty
This vulnerability will not receive a CVE
2 years ago


Phew .. no-one is going to be maliciously creating games on behalf of other players now. Dodged a bullet there.

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