CVE-2023-0501

6.5 MEDIUM

📋 TL;DR

This CSRF vulnerability in the WP Insurance WordPress plugin allows attackers to trick logged-in administrators into activating arbitrary plugins on their WordPress site. Attackers can exploit this by getting an admin to click a malicious link while authenticated. Only WordPress sites using vulnerable versions of the WP Insurance plugin are affected.

💻 Affected Systems

Products:
  • WP Insurance WordPress Plugin
Versions: All versions before 2.1.4
Operating Systems: All operating systems running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with WP Insurance plugin installed and an authenticated admin user.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could activate malicious plugins that provide backdoor access, execute arbitrary code, or compromise the entire WordPress installation and underlying server.

🟠

Likely Case

Attackers would activate legitimate but vulnerable plugins to create additional attack surfaces, or activate plugins with known vulnerabilities to chain exploits.

🟢

If Mitigated

With proper CSRF protections and admin awareness, exploitation would be prevented even if the vulnerability exists.

🌐 Internet-Facing: HIGH
🏢 Internal Only: LOW

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ✅ No
Complexity: LOW

Exploitation requires social engineering to trick authenticated admin into clicking malicious link. No authentication bypass needed.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 2.1.4

Vendor Advisory: https://wpscan.com/vulnerability/36fd6c0d-3f0c-4f7d-aa17-5b2d084ab94c

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find WP Insurance plugin. 4. Click 'Update Now' if available, or download version 2.1.4+ from WordPress repository. 5. Replace plugin files if manual update needed.

🔧 Temporary Workarounds

Implement CSRF Protection Manually

all

Add nonce verification to plugin activation requests

Edit plugin files to add wp_verify_nonce() checks before plugin activation actions

Disable Plugin

all

Temporarily disable WP Insurance plugin until patched

Navigate to WordPress admin > Plugins > Installed Plugins > Deactivate WP Insurance

🧯 If You Can't Patch

  • Implement strict access controls limiting admin panel access to trusted networks only
  • Educate administrators about CSRF risks and implement clickjacking protection headers

🔍 How to Verify

Check if Vulnerable:

Check WP Insurance plugin version in WordPress admin panel under Plugins > Installed Plugins

Check Version:

wp plugin list --name=wp-insurance --field=version

Verify Fix Applied:

Verify plugin version is 2.1.4 or higher and test CSRF protection by attempting to activate plugins without proper nonce

📡 Detection & Monitoring

Log Indicators:

  • Unexpected plugin activation events in WordPress logs
  • Multiple plugin activation requests from same admin session

Network Indicators:

  • HTTP POST requests to /wp-admin/plugins.php without proper referrer headers
  • Suspicious plugin activation requests

SIEM Query:

source="wordpress.log" AND "activated plugin" AND NOT user_agent="WordPress/*"

🔗 References

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