CVE-2023-27889

8.8 HIGH

📋 TL;DR

This CSRF vulnerability in LIQUID SPEECH BALLOON WordPress plugin allows attackers to trick authenticated users into performing unintended actions by visiting malicious web pages. All WordPress sites using vulnerable plugin versions are affected, potentially compromising user accounts and site functionality.

💻 Affected Systems

Products:
  • LIQUID SPEECH BALLOON WordPress plugin
Versions: All versions prior to 1.2
Operating Systems: All operating systems running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with vulnerable plugin activated

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete site takeover through admin account compromise, data theft, or site defacement via authenticated user actions

🟠

Likely Case

Unauthorized content modification, user account compromise, or plugin settings changes

🟢

If Mitigated

Limited impact with proper CSRF protections and user awareness

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

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

Exploitation requires user interaction but is technically simple

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.2

Vendor Advisory: https://wordpress.org/plugins/liquid-speech-balloon/#developers

Restart Required: No

Instructions:

1. Log into WordPress admin panel
2. Navigate to Plugins → Installed Plugins
3. Find LIQUID SPEECH BALLOON
4. Click 'Update Now' if available
5. If not, download version 1.2+ from WordPress repository
6. Deactivate old version
7. Upload and activate new version

🔧 Temporary Workarounds

Disable vulnerable plugin

all

Temporarily deactivate LIQUID SPEECH BALLOON plugin until patched

wp plugin deactivate liquid-speech-balloon

Implement CSRF protection headers

all

Add security headers to WordPress site to help prevent CSRF attacks

Add to .htaccess: Header set X-Frame-Options "SAMEORIGIN"
Add to .htaccess: Header set Content-Security-Policy "frame-ancestors 'self'"

🧯 If You Can't Patch

  • Implement web application firewall with CSRF protection rules
  • Restrict plugin access to trusted users only with additional authentication

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → LIQUID SPEECH BALLOON version

Check Version:

wp plugin get liquid-speech-balloon --field=version

Verify Fix Applied:

Confirm plugin version is 1.2 or higher in WordPress admin

📡 Detection & Monitoring

Log Indicators:

  • Unusual plugin action requests from unexpected referrers
  • Multiple failed authentication attempts followed by successful plugin actions

Network Indicators:

  • HTTP requests to plugin endpoints with suspicious referrer headers
  • Cross-origin requests to plugin admin functions

SIEM Query:

source="wordpress" AND (plugin="liquid-speech-balloon" AND version<1.2) OR (http_referer CONTAINS malicious-domain AND uri CONTAINS /wp-admin/)

🔗 References

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