CVE-2022-47424

5.4 MEDIUM

📋 TL;DR

This CSRF vulnerability in ARMember WordPress plugins allows attackers to trick authenticated administrators into performing unintended actions by visiting malicious web pages. It affects ARMember free version up to 4.0.5 and ARMember Premium versions before 6.7.1. Attackers could modify membership settings or perform other administrative actions without the admin's knowledge.

💻 Affected Systems

Products:
  • ARMember
  • ARMember Premium
Versions: ARMember: n/a through 4.0.5; ARMember Premium: n/a before 6.7.1
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with vulnerable ARMember plugin versions. Only affects authenticated administrators who can be tricked into visiting malicious pages while logged in.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could completely reconfigure membership settings, modify user roles, change payment configurations, or delete critical plugin data, potentially disrupting business operations or enabling further attacks.

🟠

Likely Case

Attackers would modify membership settings, change user permissions, or alter plugin configurations to weaken security or enable other attacks.

🟢

If Mitigated

With proper CSRF protections, the vulnerability would be blocked, preventing unauthorized administrative actions even if users visit malicious sites.

🌐 Internet-Facing: HIGH
🏢 Internal Only: LOW

🎯 Exploit Status

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

CSRF attacks are well-understood and easy to implement. Exploitation requires social engineering to trick authenticated admins into visiting malicious pages.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: ARMember 4.0.6+, ARMember Premium 6.7.1+

Vendor Advisory: https://patchstack.com/database/vulnerability/armember-membership/wordpress-armember-plugin-4-0-5-cross-site-request-forgery-csrf?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find ARMember or ARMember Premium. 4. Click 'Update Now' if available. 5. If manual update needed, download latest version from WordPress repository or vendor site, deactivate old version, upload new version, then activate.

🔧 Temporary Workarounds

Implement CSRF Tokens

all

Add CSRF protection to all administrative forms in the plugin

Requires custom PHP development to add nonce verification to form submissions

Use Security Plugins

all

Install WordPress security plugins that provide CSRF protection

Install plugins like Wordfence, Sucuri, or iThemes Security

🧯 If You Can't Patch

  • Restrict administrative access to trusted networks only
  • Implement strict browser security policies and educate admins about phishing risks

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Installed Plugins, find ARMember versions. Vulnerable if ARMember ≤4.0.5 or ARMember Premium <6.7.1.

Check Version:

wp plugin list --name=armember --field=version (if WP-CLI installed)

Verify Fix Applied:

After update, verify ARMember version is ≥4.0.6 or ARMember Premium ≥6.7.1 in WordPress plugins list.

📡 Detection & Monitoring

Log Indicators:

  • Unexpected administrative actions in WordPress logs
  • Multiple failed CSRF token validations
  • Unusual plugin configuration changes

Network Indicators:

  • HTTP POST requests to admin-ajax.php or admin-post.php without proper referrer headers
  • Requests from unexpected sources to administrative endpoints

SIEM Query:

source="wordpress" AND (uri_path="/wp-admin/admin-ajax.php" OR uri_path="/wp-admin/admin-post.php") AND http_method="POST" AND NOT referrer CONTAINS site_domain

🔗 References

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