[41601] in bugtraq
Re: Re: [KAPDA::#16] - SMF SQL Injection
daemon@ATHENA.MIT.EDU (retrogod@aliceposta.it)
Mon Dec 12 16:43:41 2005
Date: 10 Dec 2005 20:46:01 -0000
Message-ID: <20051210204601.28027.qmail@securityfocus.com>
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From: retrogod@aliceposta.it
To: bugtraq@securityfocus.com
[quote]
I'm a developer from over at simplemachines and I do not see how this can pose an exploit? Let's examine the code piece by piece:
The code is entered at this point:
if (!is_numeric($_REQUEST['start']))
So, will be executed if $_REQUEST['start'] is a string. It's then used in the query. However, it's used in the query in this piece of code:
substr(strtolower($_REQUEST['start']), 0, 1)
So, the string is set to lower case, and then only the FIRST letter is used within the query. How can anyone exploit the database with a one character insertion? Of course this is within single quotes as well, so it cannot even be a command.
I simply cannot see how you could possibly exploit SQL from this?
[/quote]
mphhh, correct...
the only problem I see is path disclosure, 'cause you can inject only a one char string:
http://[target]/smfrc1/index.php?action=mlist;sort=realName;start=\;desc
query becomes:
SELECT COUNT(ID_MEMBER) FROM smf_members WHERE LOWER(SUBSTRING(realName, 1, 1)) < '\' AND is_activated = 1
and at screen, you have:
Errore di sintassi nella query SQL vicino a ''\'
AND is_activated = 1' linea 3
File: [full_application_path]Memberlist.php
Line: 162
but I think you cannot inject commands...
