Strategic Overview
- Status
- Patched in 3.9.1
- Affected Plugin
- I Recommend This – Love/Like Button for WordPress Posts
- Affected Version
<= 3.9.0- CVSS
- 4.3Medium
- Weakness type
- CWE-352 · Cross-Site Request Forgery (CSRF)
- CVE
CVE-2023-28696
At a glance
CVE-2023-28696 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the I Recommend This WordPress plugin, affecting versions <= 3.9.0. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 3.9.1; sites on affected versions should update now. Disclosed March 2023, reported by thiennv.
Vulnerability Overview
The I Recommend This plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.9.0. This is due to missing nonce validation on the ajax_callback function. This makes it possible for unauthenticated attackers to modify the plugins settings granted they can trick a site administrator into performing an action such as clicking on a link. The impact of this vulnerability is unknown.
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.
CWE-352: Cross-Site Request Forgery (CSRF)
Reaching this weakness in I Recommend This <= 3.9.0 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 I Recommend This the fix is 3.9.1: builds <= 3.9.0 are affected, anything from 3.9.1 onward is not.
Remediation
Update to version 3.9.1, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to I Recommend This: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: I Recommend This 3.9.1 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in I Recommend This – Love/Like Button for WordPress Posts
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