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List:       full-disclosure
Subject:    [FD] Local file inclusion in cmsmadesimple <=2.2.1
From:       Wester Zeng <evilzyzeng () outlook ! com>
Date:       2017-06-28 16:04:26
Message-ID: PS1PR04MB1705E48E7DDD9B9A4801E816DFDD0 () PS1PR04MB1705 ! apcprd04 ! prod ! outlook ! com
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=======
Details
=======

Software:cmsmadesimple


Homepage:http://www.cmsmadesimple.org/<http://www.cmsmadesimple.org/><http://www.cmsmadesimple.org/>



version:<=2.2.1


description:The File Inclusion vulnerability allows an attacker to include a file, usually \
exploiting a "dynamic file inclusion" mechanisms implemented in the target application. The \
vulnerability occurs due to the use of user-supplied input without proper validation.


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PoC:

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For cmsmadesimple <=2.1.6:


The Vulnerability is existing in /cmsms/admin/listtags.php Line 82 and line 54

If there is a file named "1.phpinfo.php" in http://127.0.0.1/1.phpinfo.php

So when we visit the following link:

http://127.0.0.1/cmsms/admin/listtags.php?_sk_=08852e62af02bc03&action=showpluginhelp


local file inclusion successfully!


For cmsmadesimple <=2.2.1:


Current version is still vulnerable.


if ($action == "showpluginhelp") {
    $content = '';
    $file = $find_file("$type.$plugin.php");
    if( is_file($file) ) require_once($file);


=========

Reference

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https://lightrains.org/local-file-inclusion-in-cmsmadesimple/




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