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TITLE:
V3 Chat Instant Messenger Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA20649

VERIFY ADVISORY:
http://secunia.com/advisories/20649/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass, Cross Site Scripting, Manipulation of data

WHERE:
>From remote

SOFTWARE:
V3 Chat
http://secunia.com/product/10567/

DESCRIPTION:
luny has reported some vulnerabilities in V3 Chat Instant Messenger,
which can be exploited by malicious users to conduct SQL injection
attacks, script insertion attacks, and bypass certain security
restrictions, and by malicious people to conduct cross-site scripting
attacks and SQL injection attacks.

1) Input passed to the "id" parameter in mail/index.php and to the
"membername" parameter in members/online.php is not properly
sanitised before being used in a SQL query. This can be exploited to
manipulate SQL queries by injecting arbitrary SQL code.

2) Input passed to the "login_id" parameter in members/is_online.php
and to the "membername" parameter in members/profileview.php is not
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 "aboutme" and "hobbies" form field parameters
when editing a user's profile is not properly sanitised before being
used. This can be exploited to insert arbitrary HTML and script code,
which will be executed in a user's browser session in context of an
affected site when a malicious profile is viewed.

4) Due to insecure authentication and session management it is
possible for an attacker with a valid account to manipulate other
user's profiles or to perform actions with the identity of another
user by changing the "membername" parameter in the URL.

SOLUTION:
Edit the source code to ensure that input is properly sanitised.
Grant only trusted users to the application.

Use another product.

PROVIDED AND/OR DISCOVERED BY:
luny

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