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iManager Plugin v1.2.8 (d) Remote Arbitrary File Deletion Vulnerability

Medium

Advisory ID

ZSL-2011-5043

Release Date

16 September 2011

Vendor

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

Affected Version

<= 1.2.8 Build 02012008

CVE

N/A

Tested On

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

Summary

With iManager you can manage your files/images on your webserver, and it provides user interface to most of the phpThumb() functions. It works either stand-alone or as a plugin to WYSIWYG editors like tinyMCE, SPAW, htmlAREA, Xinha and FCKeditor.

Description

Input passed to the 'd' parameter in /scripts/phpCrop/crop.php is not properly sanitised before being used to delete files. This can be exploited to delete files with the permissions of the web server via directory traversal sequences passed within the 'd' parameter.

/scripts/phpCrop/crop.php
----------------
if( isset($_REQUEST['s']) ) {
    //delete previous temp files

    $matches = glob($d . '{*.jpg,*.JPG}', GLOB_BRACE);

    if ( is_array ( $matches ) ) {
         foreach ( $matches as $fn) {
              @unlink($fn);
         }
}

Proof of Concept

imanager_del.txtTXT

Disclosure Timeline

N/A

Credits

Vulnerability discovered by Gjoko Krstic

References

[1]http://www.securityfocus.com/bid/49662

[2]http://www.exploit-db.com/exploits/17852/

[3]http://packetstormsecurity.org/files/105193

[4]http://secunia.com/advisories/46063/

[5]http://www.securelist.com/en/advisories/46063