FirstBlood-#535 — Open Redirect on /drpanel/logout.php?ref=
This issue was discovered on FirstBlood v2
On 2021-10-26, th4nu0x0 Level 2 reported:
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Summary:
The ref parameter is still vulnerable to open redirect on /drpanel/logout.php it turns out that fix was not sufficient and I was able to bypass the fix by adding %09.
Payload:
/drpanel/logout.php?ref=/%09/google.com
Steps To Reproduce:
Impact:
Open redirects can be used in phishing attacks to trick users into thinking that they visiting legitimate website.
P4 Low
Endpoint: /drpanel/logout.php
Parameter: ref
Payload: /%09/google.com
FirstBlood ID: 18
Vulnerability Type: Open Redirect
The open redirect bug on logout.php was fixed but the code still failed to filter out certain characters such as %09 and thus the endpoint is still vulnerable to open redirect. This vulnerability only affects chrome.