Bugtraq: Re: sql injection in phpbb

[Marius Kaase <marius () kaase net>]

jocanor jocanor wrote:

> I found a vulnerability en phpbb 2.0.5 and prior, is probably also affect 2.0.6
>
> this bug don't affect to version 2.0.7 
>
> phpbb have a list of registereds users, when you click on a memebr of this list, you are requesting data to the database 
>
> for example:
>
> http://www.example.com/forum/profile.php?mode=viewprofile&u=2
>
> this url show the information to the user with the uid = 2, the uid is a number assigned to users in phpbb.
>
> but it isn't secure, because if you use this url, you can inject sql comands...
>
> exploit:
>
> http://www.example.com/profile.php?mode=viewprofile&u='[sqlcode]
>
> where [sql code] represents the code may be injected.
Does not affect 2.0.6.

This code prevents it:

function get_userdata($user, $force_str = false)
{
global $db;

if (intval($user) == 0 || $force_str)
{
$user = trim(htmlspecialchars($user));
$user = substr(str_replace("\\'", "'", $user), 0, 25);
$user = str_replace("'", "\\'", $user);
}
else
{
$user = intval($user);
}

(Taken from: http://www.phpbb.com/phpBB/viewtopic.php?p=848495)

--

Kind Regards
Marius Kaase

"If the Phone Doesn't Ring, It's Me"