Tree Sitemap (Pages, Posts & Categories list) <= 2.9 - Cross-Site Request Forgery to Arbitrary Plugin Installation/Activation
Strategic Overview
- Status
- Patched in 3.1
- Affected Plugin
- Tree Sitemap (Pages, Posts & Categories list)
- Affected Version
<= 2.9- CVSS
- 8.8High
- Weakness type
- CWE-352 · Cross-Site Request Forgery (CSRF)
- CVE
CVE pending
At a glance
This record tracks a high-severity Cross-Site Request Forgery (CSRF) vulnerability in the Tree Sitemap (Pages, Posts & Categories list) WordPress plugin, affecting versions <= 2.9. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 3.1; sites on affected versions should update now. Disclosed April 2021, reported by WPScanTeam.
Vulnerability Overview
The Tree Sitemap (Pages, Posts & Categories list) plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.9. This is due to missing or incorrect nonce validation on the 'cp_plugins_do_button_job_later_callback' AJAX action. This makes it possible for unauthenticated attackers to install and activate other plugins via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-352: Cross-Site Request Forgery (CSRF)
Tree Sitemap (Pages, Posts & Categories list) <= 2.9 carries this weakness at cp_plugins_do_button_job_later_callback, and reaching it takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.
An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For Tree Sitemap (Pages, Posts & Categories list) the fix is 3.1: builds <= 2.9 are affected, anything from 3.1 onward is not.
Remediation
Update to version 3.1, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Tree Sitemap (Pages, Posts & Categories list): WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Tree Sitemap (Pages, Posts & Categories list) 3.1 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in Tree Sitemap (Pages, Posts & Categories list)
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