CVE-2023-0499

4.3 MEDIUM

📋 TL;DR

This CSRF vulnerability in the QuickSwish 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 QuickSwish plugin are affected.

💻 Affected Systems

Products:
  • QuickSwish WordPress Plugin
Versions: All versions before 1.1.0
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with QuickSwish plugin installed and at least one admin user account.

📦 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 requires social engineering and admin interaction, reducing successful attacks.

🌐 Internet-Facing: MEDIUM
🏢 Internal Only: LOW

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
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: 1.1.0 and later

Vendor Advisory: https://wpscan.com/vulnerability/9342470a-a0ad-4f0b-b95f-7daa39a6362b

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find QuickSwish plugin. 4. Click 'Update Now' if available, or manually update to version 1.1.0+. 5. Verify plugin is active and functioning.

🔧 Temporary Workarounds

Disable QuickSwish Plugin

all

Temporarily deactivate the vulnerable plugin until patched

wp plugin deactivate quickswish

Implement CSRF Protection

all

Add custom CSRF tokens to plugin activation requests

🧯 If You Can't Patch

  • Remove QuickSwish plugin entirely if not essential
  • Implement web application firewall rules to block CSRF attacks targeting plugin activation endpoints

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Installed Plugins for QuickSwish version. If version is below 1.1.0, system is vulnerable.

Check Version:

wp plugin get quickswish --field=version

Verify Fix Applied:

Verify QuickSwish plugin version is 1.1.0 or higher in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

  • Multiple plugin activation requests from same admin session
  • Unusual plugin activation patterns in WordPress logs
  • CSRF token validation failures

Network Indicators:

  • HTTP POST requests to /wp-admin/plugins.php without proper referrer headers
  • Plugin activation requests from unexpected sources

SIEM Query:

source="wordpress" AND (uri_path="/wp-admin/plugins.php" AND action="activate") | stats count by src_ip, user

🔗 References

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