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RedLevel Advisory #021 - CubeCart v3.0.16 SQL Injection Vulnerability



RedLevel Advisory #021 - CubeCart v3.0.16 SQL Injection Vulnerability
RedLevel Advisory #021 - CubeCart v3.0.16 SQL Injection Vulnerability



An interesting SQL injection vulnerability was discovered in CubeCart v3.0.16. This vulnerability cannot easily be exploited by traditional means - in fact, the actual vulnerable variable was not discovered.

As a piece of user input is passed to CubeCart, it is sanitized through a routine mySQLSafe - all except the variable $option in include/blah/cart.inc.php as well as other files in the same directory.

The vulnerability was only reproduced by RedLevel with the Acunetix Web Vulnerability Scanner. The vulnerability evidently 'poisons' data attached with the user's cookie. The following error message displays an example of the injection:

--- begin ---

MySQL Error Occured
1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Set-Cookie' at line 2

QUERY = SELECT cc3_CubeCart_options_bot.option_id, cc3_CubeCart_options_bot.value_id, option_price, option_symbol, assign_id FROM `cc3_CubeCart_options_bot` INNER JOIN `cc3_CubeCart_options_mid` ON cc3_CubeCart_options_mid.value_id = cc3_CubeCart_options_bot.value_id INNER JOIN `cc3_CubeCart_options_top` ON cc3_CubeCart_options_bot.option_id = cc3_CubeCart_options_top.option_id WHERE assign_id = Set-Cookie


--- end ---

To solve this vulnerability, the variable $option should be sanitized with mySQLSafe in all include files.

John Martinelli
john@martinelli.com 

RedLevel Security
http://www.RedLevel.org 

May 21st, 2007


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