From: Cheng-Jih Chen (cjccjc.org)
Date: Mon Jun 02 2003 - 09:59:10 CDT

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On Fri, 30 May 2003, mike little wrote:

> Secondly, has anyone tried this? The fact is that b2config.php defines
> $b2inc with no test before hand. So that, whilst for the duration of the
> parsing of b2config.php, $b2inc could indeed be set to some value from
> the outside world. It is immediately overwritten with no check with the
> value set by the user (or left from the defalut installation).
> In order to effectively use the setting of b2inc for malicious purposes
> you would have to have enough access to edit b2config.php.

The problem is that the default location for gm-2-b2.php is in
the b2-tools directory. The include("b2config.php") statement may
then miss the primary b2 directory and fail to pick up b2config.php.
If register_globals is on, then the attacker can set the b2inc variable
from the URL.

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