A vulnerability and a weakness have been reported in E-Lite POS, which can be exploited by malicious people to enumerate valid user accounts or conduct SQL injection attacks.

1) Input passed to the "username" and potentially other parameters in default.asp is not properly sanitised before being used in SQL queries. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.

Successful exploitation allows e.g. changing user names and passwords.

2) The script returns detailed error messages in case of a failed login attempt. This can be exploited to enumerate valid user accounts.

Solution
Edit the source code to ensure that input is properly sanitised and use less detailed error messages.

Provided and/or discovered by
1) Aria-Security Team
2) An anonymous person

Original Advisory
http://aria-security.net/forum/showthread.php?p=1108#post1108

Deep Links
Links available to Secunia VIM customers