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Date: 11 Nov 2003 08:26:47 -0600
From: Jayson Anderson <bugtraq@...ick.com>
To: telli@...ezwiz.com
Cc: bugtraq@...urityfocus.com
Subject: Re: sql injection in phpbb


I just grabbed 2.0.6 the other day and this fix is implemented. I'm
seeing the fix starting at (my) line 80 in file
'includes/functions.php'.

It is placed directly above the following unique instance of code you
should currently have: 

"$sql = "SELECT *
                FROM " . USERS_TABLE . "
                WHERE ";
$sql .= ( ( is_integer($user) ) ? "user_id = $user" : "username = '" . 
$user . "'" ) . " AND user_id <> " . ANONYMOUS; "

which should be somewhere around line 60-70 in your current
includes/functions.php file.  That is the only instance. 

hth
Jayson


On Mon, 2003-11-10 at 12:46, telli@...ezwiz.com wrote:
> In-Reply-To: <3FAD4685.2040907@...se.net>
> 
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> >Message-ID: <3FAD4685.2040907@...se.net>
> >Date: Sat, 08 Nov 2003 20:39:49 +0100
> >From: Marius Kaase <marius@...se.net>
> >Reply-To: marius@...se.net
> >User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6a) Gecko/20031105 Thunderbird/0.4a
> >X-Accept-Language: en-us, en
> >MIME-Version: 1.0
> >To: jocanor jocanor <jocanor2002@...mail.com>
> >Cc: bugtraq@...urityfocus.com
> >Subject: Re: sql injection in phpbb
> >References: <20031108183025.19866.qmail@...www2-symnsj.securityfocus.com>
> >In-Reply-To: <20031108183025.19866.qmail@...www2-symnsj.securityfocus.com>
> >Content-Type: text/plain; charset=us-ascii; format=flowed
> >Content-Transfer-Encoding: 7bit
> >
> >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"
> >
> Ok now where exactly would one include this information to tighten the security? After going through all profile pages  (running 2.0.6) I found nothing like this Are we sure it is included in 2.0.6? I think if the files that need to be fixed can be listed we can start to work on this fix.
> 
> Telli    
> 



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