Broken Authentication or Session Management
Password reset link does not expire
You create an account in example.com. You add email a@email.com
Your email account gets hacked.
The hacker figures out you have a user on example.com. The hacker clicks the reset-password-link. But does not use it.
The hacked person figures out that he is hacked and thus goes to example.com to change his password.
The hacker now clicks on the link and manage to reset the password.
The problem here is that the first reset-link should be blocked once the second is sent.
Relevant bug bounty reports
https://hackerone.com/reports/23579 https://hackerone.com/reports/39203 https://hackerone.com/reports/23921
Cookie does not expire
An easy way to test this is by using burp-suite.
Open burp-suite
Login to a website you want to test
Intercept the request, anyone will do.
Right click on the request in burp-suite and click on "Send to repeater". Now you have saved that request for later. With the current cookie.
Log out from the website
Go to the Repeater-tab in burp and click on "Go".
Verify that you are redirected to the login.
Relevant reports on hackerone
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