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Re: sql injection in phpbb



In-Reply-To: <3FAD4685.2040907@xxxxxxxxx>

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>Date: Sat, 08 Nov 2003 20:39:49 +0100
>From: Marius Kaase <marius@xxxxxxxxx>
>Reply-To: marius@xxxxxxxxx
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>To: jocanor jocanor <jocanor2002@xxxxxxxxxxx>
>Cc: bugtraq@xxxxxxxxxxxxxxxxx
>Subject: Re: sql injection in phpbb
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>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