Re: b2 cafelog 0.6.1 remote command execution.

[Cheng-Jih Chen <cjc () cjc org>]

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.