49 lines
1.4 KiB
Markdown
49 lines
1.4 KiB
Markdown
# Registration Vulnerabilities
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## Takeover
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### Duplicate Registration
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* Try to generate using an existing username
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* Check varying the email:
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* uppsercase
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* +1@
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* add some some in the email
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* special characters in the email name \(%00, %09, %20\)
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* Put black characters after the email: `test@test.com a`
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* victim@gmail.com@attacker.com
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* victim@attacker.com@gmail.com
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### Username Enumeration
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Check if you can figure out when a username has already been registered inside the application.
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### Password Policy
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Creating a user check the password policy \(check if you can use weak passwords\).
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In that case you may try to bruteforce credentials.
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### SQL Injection
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\*\*\*\*[**Check this page** ](sql-injection/#insert-statement)to learn how to attempt account takeovers or extract information via **SQL Injections** in registry forms.
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### Oauth Takeovers
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{% page-ref page="oauth-to-account-takeover.md" %}
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### SAML Vulnerabilities
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{% page-ref page="saml-attacks/" %}
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### Change Email
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when registered try to change the email and check if this change is correctly validated or can change it to arbitrary emails.
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## More Checks
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* Check if you can use **disposable emails**
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* **Long** **password** \(>200\) leads to **DoS**
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* **Check rate limits on account creation**
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* Use username@**burp\_collab**.net and analyze the **callback**
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