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TITLE:
Phorum Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA24932

VERIFY ADVISORY:
http://secunia.com/advisories/24932/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting, Manipulation of data, Privilege escalation

WHERE:
>From remote

SOFTWARE:
Phorum 5.x
http://secunia.com/product/4144/

DESCRIPTION:
Janek Vind has discovered some vulnerabilities in Phorum, which can
be exploited by malicious users to conduct SQL injection attacks and
to gain escalated privileges, and by malicious people to conduct
cross-site scripting and cross-site request forgery attacks.

1) Input passed to the "recipients" parameter in pm.php is not
properly sanitised and verified before being used in an SQL query in
include/db/mysq.php. This can be exploited to manipulate SQL queries
by injecting arbitrary SQL code.

Successful exploitation requires valid user credentials.

2) Errors exist due to improper verification of the
"$_POST[user_ids]" parameter and the "$userdata" array in
include/controlcenter/users.php. This can be exploited to gain admin
privileges via a specially crafted POST request.

Successful exploitation requires moderation privileges and that
"register_globals" is enabled.

3) Input passed to the "group_id" parameter in admin.php when editing
groups and to the "smiley_id" parameter in admin.php when editing
smileys is not properly sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in an
administrative user's browser session in context of an affected site.

4) The problem is caused due to the application allowing
administrators to perform certain actions via HTTP requests without
performing any validity checks to verify the request. This can be
exploited to e.g. change certain settings by enticing logged-in
administrator to visit a malicious site.

The vulnerabilities are confirmed in version 5.1.20. Other versions
may also be affected.

SOLUTION:
Update to version 5.1.22, which fixes vulnerabilities #1 through #3.

Do not follow links from untrusted sources and do not browse
untrusted sites when logged in as administrator.

PROVIDED AND/OR DISCOVERED BY:
Janek Vind "waraxe"

ORIGINAL ADVISORY:
http://www.waraxe.us/advisory-49.html

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About:
This Advisory was delivered by Secunia as a free service to help
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vulnerabilities.

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