CVE-2024-9458
📋 TL;DR
The Reservit Hotel WordPress plugin before version 3.0 contains a stored cross-site scripting (XSS) vulnerability in plugin settings. This allows authenticated administrators to inject malicious scripts that execute when other users view affected pages, even in WordPress multisite installations where unfiltered_html is restricted. Only WordPress sites using vulnerable versions of this specific plugin are affected.
💻 Affected Systems
- Reservit Hotel WordPress Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker with admin privileges could inject malicious JavaScript that steals session cookies, redirects users to phishing sites, or performs actions on behalf of authenticated users, potentially leading to complete site compromise.
Likely Case
Malicious admin or compromised admin account injects scripts that affect other users viewing plugin pages, potentially stealing credentials or session data from regular users.
If Mitigated
With proper access controls and admin account security, impact is limited to plugin functionality disruption.
🎯 Exploit Status
Exploitation requires admin privileges. Attack involves injecting scripts into plugin settings fields that aren't properly sanitized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.0
Vendor Advisory: https://wpscan.com/vulnerability/1157d6ae-af8b-4508-97e9-b9e86f612550/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Reservit Hotel' plugin. 4. Click 'Update Now' if update available. 5. Alternatively, download version 3.0+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Remove Plugin
allTemporarily deactivate and remove vulnerable plugin until patched
wp plugin deactivate reservit-hotel
wp plugin delete reservit-hotel
Restrict Admin Access
allImplement strict access controls for admin accounts and monitor for suspicious activity
🧯 If You Can't Patch
- Implement strict admin account security with MFA and monitor for unauthorized changes
- Use web application firewall (WAF) rules to block XSS payloads in plugin settings
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Reservit Hotel → check version number. If version is below 3.0, system is vulnerable.Check Version:
wp plugin get reservit-hotel --field=versionVerify Fix Applied:
After updating, verify plugin version shows 3.0 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual modifications to plugin settings by admin users
- JavaScript injection patterns in plugin configuration data
Network Indicators:
- Unexpected JavaScript loading from plugin pages
- Suspicious outbound connections from plugin-related pages
SIEM Query:
source="wordpress" AND (event="plugin_updated" OR event="option_updated") AND plugin="reservit-hotel" AND version<"3.0"