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TITLE:
XMB Forum Server Set Variable Overwrite and SQL Injection

SECUNIA ADVISORY ID:
SA16375

VERIFY ADVISORY:
http://secunia.com/advisories/16375/

CRITICAL:
Moderately critical

IMPACT:
Manipulation of data

WHERE:
>From remote

SOFTWARE:
XMB 1.x
http://secunia.com/product/1491/

DESCRIPTION:
Heintz has discovered two vulnerabilities in XMB Forum, which can be
exploited by malicious users to overwrite certain server set
variables or conduct SQL injection attacks.

1) An incorrect use of the "extract()" function in xmb.php can be
exploited to overwrite certain server set variables (e.g.
_SERVER[REMOTE_ADDR]).

2) Input passed to the "u2u_select" parameter in
"include/u2u.inc.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 have been confirmed in version 1.9.1. Other
versions may also be affected.

SOLUTION:
Edit the source code to ensure that input is properly sanitised and
to ensure server set variables are not overwritten.

PROVIDED AND/OR DISCOVERED BY:
Heintz

ORIGINAL ADVISORY:
http://forums.xmbforum.com/viewthread.php?tid=754523

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