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Re: Mybb 1.6.8 'announcements.php' Sql Injection Vulnerabilitiy
From: Gianluca Brindisi <g () brindi si>
Date: Tue, 26 Jun 2012 18:46:59 +0200

Isn't $aid already escaped by intval() ?

Gianluca

On Fri, Jun 22, 2012 at 10:13 PM, Yaniv Shaked <yaniv0a () gmail com> wrote:

Look at the code at announcements.php:

$aid = intval($mybb->input['aid']);

[Boring lines…]

[Boring lines…]

$query = $db->query("
       SELECT u.*, u.username AS userusername, a.*, f.*
       FROM ".TABLE_PREFIX."announcements a
       LEFT JOIN ".TABLE_PREFIX."users u ON (u.uid=a.uid)
       LEFT JOIN ".TABLE_PREFIX."userfields f ON (f.ufid=u.uid)
       WHERE a.startdate<='$time' AND (a.enddate>='$time' OR
a.enddate='0') AND a.aid='$aid'
");

$announcementarray = $db->fetch_array($query);

Complete the missing part :)

--
Thanks,
Yaniv

On Jun 22, 2012, at 8:58 AM, Henri Salo wrote:

On Thu, Jun 21, 2012 at 02:44:59PM +0000, Amir () irist ir wrote:
a bug in Mybb 1.6.8 'announcements.php' that allows to us to occur a
Sql Injection on a Remote machin.





#########################################################################################
#
# Exploit Title : Mybb 1.6.8 'announcements.php' Sql Injection
Vulnerabilitiy
#
# Author : IrIsT.Ir
#
# Discovered By : Am!r
#
# Home : http://IrIsT.Ir/forum
#
# Software Link : http://www.mybb.com/
#
# Security Risk : High
#
# Version : All Version
#
# Tested on : GNU/Linux Ubuntu - Windows Server - win7
#
# Dork : "Powered By Mybb"
#

#########################################################################################
#
# Expl0iTs :
#
# [TarGeT]/Patch/announcements.php?aid=1[Sql]
#
#

#########################################################################################
#
# Greats : B3HZ4D - Crim3R - nimaarek - Net.Edit0r - A.Cr0x - G3n3rall
- R3ZA BLACK HAT -
#
# TaK.FaNaR - m3hdi - F () rid - joker_s - H4x0r - dr.tofan -
skote_vahshat - d3c0d3r -
#
# Dr.Security - Mr.Xpr - Bl4ck_king - hellboy - Shekaf & All Members In
IrIsT.Ir
#

#########################################################################################

Could not reproduce. Could you give working PoC?

- Henri Salo



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