Open Redirect in erudika/scoold

Valid

Reported on

Jul 31st 2021


✍️ Description

There is an open redirect vulnerability in the following URL:

https://live.scoold.com/signin?returnto=https://google.com

🕵️‍♂️ Proof of Concept

Step to reproduce
1. open above URL
2. login in the applicaiton
3. you redirect to google.com

💥 Impact

That causes a redirection to an arbitrary external domain. This behavior can be leveraged to facilitate phishing attacks against users of the application. The ability to use an authentic application URL, targeting the correct domain and with a valid SSL certificate (if SSL is used), lends credibility to the phishing attack because many users, even if they verify these features, will not notice the subsequent redirection to a different domain. also it can chain with some other vulnerabilities like SSRF, etc.

References

We have contacted a member of the erudika/scoold team and are waiting to hear back 4 months ago
Musio modified their report
4 months ago
Alex Bogdanovski validated this vulnerability 4 months ago
Musio has been awarded the disclosure bounty
The fix bounty is now up for grabs
Alex Bogdanovski confirmed that a fix has been merged on 677ab7 4 months ago
Alex Bogdanovski has been awarded the fix bounty