A vulnerability classified as problematic was found in copy-me Plugin 1.0.0 on WordPress (WordPress Plugin). This vulnerability affects an unknown part. The manipulation with an unknown input leads to a cross-site request forgery vulnerability. The CWE definition for the vulnerability is CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. As an impact it is known to affect integrity.

The bug was discovered 11/01/2016. The weakness was released 12/21/2016 by Tom Adams as copy-me vulnerable to CSRF allowing unauthenticated attacker to copy posts (WordPress plugin) as not defined mailinglist post (Full-Disclosure). The advisory is shared for download at seclists.org. The public release happened without coordination with the vendor. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available. The advisory points out:

This plugin does not use nonces. Copying posts could allow taking a secret post from a non-public site within a multisite installation and moving it to a public site.

A public exploit has been developed by Tom Adams in HTML and been published immediately after the advisory. It is possible to download the exploit at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 50 days. During that time the estimated underground price was around $0-$5k. The code used by the exploit is:

<form method=\"POST\" action=\"http://localhost/wp-admin/admin-ajax.php\";>
  <input type=\"text\" name=\"action\" value=\"copyme_copy_item\">
  <input type=\"text\" name=\"id\" value=\"1\">
  <input type=\"text\" name=\"target\" value=\"1\">
  <input type=\"submit\">
</form>

The mailinglist post contains the following remark:

Vendor has not responded after 14 days

Productinfo

Type

• WordPress Plugin

Name

• copy-me Plugin

Version

• 1.0.0

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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CVSSv2info

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