Smart SEO Tool-WordPress SEO优化插件 <= 4.0.1 - Cross-Site Request Forgery via 'wp_ajax_wb_smart_seo_tool'
Strategic Overview
- Status
- Patched in 4.0.2
- Affected Plugin
- Smart SEO Tool – SEO优化插件
- Affected Version
< 4.0.2- CVSS
- 5.4Medium
- Weakness type
- CWE-352 · Cross-Site Request Forgery (CSRF)
- CVE
CVE pending
At a glance
This record tracks a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Smart SEO Tool WordPress plugin, affecting versions < 4.0.2. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 4.0.2; sites on affected versions should update now. Disclosed August 2023.
Vulnerability Overview
The Smart SEO Tool-WordPress SEO优化插件 plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 4.0.1. This is due to missing or incorrect nonce validation on the 'wp_ajax_wb_smart_seo_tool' function. This makes it possible for unauthenticated attackers to modify the plugin's settings 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.
CWE-352: Cross-Site Request Forgery (CSRF)
Smart SEO Tool < 4.0.2 carries this weakness at wp_ajax_wb_smart_seo_tool, 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 Smart SEO Tool the fix is 4.0.2: builds < 4.0.2 are affected, anything from 4.0.2 onward is not.
Remediation
Update to version 4.0.2, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Smart SEO Tool: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Smart SEO Tool 4.0.2 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in Smart SEO Tool – SEO优化插件
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