TITLE:
427BB Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA18354

VERIFY ADVISORY:
http://secunia.com/advisories/18354/

CRITICAL:
Moderately critical

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

WHERE:
>From remote

SOFTWARE:
427BB 2.x
http://secunia.com/product/4730/

DESCRIPTION:
Aliaksandr Hartsuyeu has discovered some vulnerabilities in 427BB,
which can be exploited by malicious people to conduct script
insertion and SQL injection attacks, and bypass certain security
restrictions.

1) An error in the authentication process can be exploited to login
as an arbitrary user by manipulating the "username", "authenticated",
and "usertype" cookie parameters.

2) Input passed to the "ForumID" parameter in "showthread.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.

3) Input passed via the "url" bbcode tag when posting a message isn't
properly verified, before being used. This can be exploited to inject
arbitrary HTML and script code, which will be executed in a user's
browser session in context of an affected site when a malicious link
with the "JavaScript" URI handler is followed from a malicious
message.

The vulnerabilities have been confirmed in version 2.2.1 and have
also been reported in version 2.2. Other versions may also be
affected.

SOLUTION:
Edit the source code to ensure that input is properly sanitised and
verified, and ensure that users are properly authenticated.

PROVIDED AND/OR DISCOVERED BY:
Aliaksandr Hartsuyeu

ORIGINAL ADVISORY:
http://evuln.com/vulns/18/summary.html

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org

----------------------------------------------------------------------