Title: iBrowser Plugin v1.4.1 (lang) Local File Inclusion Vulnerability
Advisory ID: ZSL-2011-5041
Type: Local/Remote
Impact: Exposure of System Information, Exposure of Sensitive Information
Risk: (3/5)
Release Date: 16.09.2011

Summary

iBrowser is an image browser plugin for WYSIWYG editors like tinyMCE, SPAW, htmlAREA, Xinha and FCKeditor developed by net4visions. It allows image browsing, resizing on upload, directory management and more with the integration of the phpThumb image library.

Description

iBrowser suffers from a file inlcusion vulnerability (LFI) / file disclosure vulnerability (FD) when input passed thru the 'lang' parameter to ibrowser.php, loadmsg.php, rfiles.php and symbols.php is not properly verified before being used to include files. This can be exploited to include files from local resources with directory traversal attacks and URL encoded NULL bytes.

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/langs/lang.class.php
----------------
67: function loadData() {
68: global $cfg;
69: include( dirname(__FILE__) . '/' . $this -> lang.'.php' );
70: $this -> charset = $lang_charset;
71: $this -> dir = $lang_direction;
72: $this -> lang_data = $lang_data;
73: unset( $lang_data );
74: include( dirname(__FILE__) . '/' . $cfg['lang'].'.php' );
75: $this -> default_lang_data = $lang_data;
76: }

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Vendor

net4visions.com - http://www.net4visions.com

Affected Version

<= 1.4.1 Build 10182009

Tested On

Microsoft Windows XP Professional SP3 (EN)
Apache 2.2.14 (Win32)
PHP 5.3.1
MySQL 5.1.41

Vendor Status

N/A

PoC

ibrowser_lfi.txt

Credits

Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>

References

[1] http://www.securityfocus.com/bid/49663
[2] http://www.exploit-db.com/exploits/17850/
[3] http://packetstormsecurity.org/files/105187
[4] http://1337day.com/exploits/16928
[5] http://securityreason.com/wlb_show/WLB-2011090087
[6] http://xforce.iss.net/xforce/xfdb/69917

Changelog

[16.09.2011] - Initial release
[17.09.2011] - Added reference [1] and [2]
[18.09.2011] - Added reference [3]
[20.09.2011] - Added reference [4] and [5]
[22.09.2011] - Added reference [6]

Contact

Zero Science Lab

Web: http://www.zeroscience.mk
e-mail: lab@zeroscience.mk