TITLE:
Interact Multiple Vulnerabilities and Weakness

SECUNIA ADVISORY ID:
SA19488

VERIFY ADVISORY:
http://secunia.com/advisories/19488/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting, Manipulation of data, Exposure of system
information

WHERE:
>From remote

SOFTWARE:
Interact 2.x
http://secunia.com/product/9156/

DESCRIPTION:
Pratiksha Doshi has discovered some vulnerabilities and a weakness in
Interact, which can be exploited by malicious people to gain knowledge
of certain information, and conduct cross-site scripting and SQL
injection attacks.

1) The "login.php" script returns different error responses depending
on whether or not a valid username is supplied. This can can be
exploited to enumerate valid usernames.

2) Input passed to the "search_terms" parameter in search.php and
various fields when creating an account isn't properly sanitised
before being returned to the user. This can be exploited to execute
arbitrary HTML and script code in a user's browser session in context
of an affected site.

3) Input passed to the "user_name" parameter in login.php isn't
properly sanitised before being used in a SQL query. This can be
exploited to manipulate SQL queries by injecting arbitrary SQL code.

The vulnerabilities and the weakness have been confirmed in version
2.1.1 and have also been reported in version 2.1. Other versions may
also be affected.

SOLUTION:
Edit the source code to ensure that input is properly sanitised and
that only general error messages are returned to users.

PROVIDED AND/OR DISCOVERED BY:
Pratiksha Doshi

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