CVE-2024-4427
📋 TL;DR
The Comparison Slider WordPress plugin has a missing capability check on AJAX actions, allowing authenticated users with subscriber-level access or higher to modify plugin settings and delete sliders. This affects all WordPress sites using the plugin up to version 1.0.5.
💻 Affected Systems
- Comparison Slider WordPress Plugin
📦 What is this software?
Comparison Slider by Comparisonslider
⚠️ Risk & Real-World Impact
Worst Case
Attackers could delete all comparison sliders, modify plugin settings to disrupt functionality, or potentially chain with other vulnerabilities for further compromise.
Likely Case
Malicious subscribers or compromised accounts could delete or modify comparison sliders, causing content disruption and requiring restoration from backups.
If Mitigated
With proper user access controls and monitoring, impact is limited to content manipulation within the plugin's scope.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once authenticated. Subscriber role is the lowest WordPress user role.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.6 or later
Vendor Advisory: https://wordpress.org/plugins/comparison-slider/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Comparison Slider' and click 'Update Now'. 4. Verify plugin version is 1.0.6 or higher.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily deactivate the Comparison Slider plugin until patched
wp plugin deactivate comparison-slider
Restrict User Roles
allReview and minimize users with subscriber role or higher
🧯 If You Can't Patch
- Remove the Comparison Slider plugin entirely if not essential
- Implement web application firewall rules to block suspicious AJAX requests to the plugin
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Comparison Slider. If version is 1.0.5 or lower, you are vulnerable.Check Version:
wp plugin get comparison-slider --field=versionVerify Fix Applied:
After updating, confirm plugin version shows 1.0.6 or higher in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- Unusual AJAX requests to comparison-slider endpoints from subscriber-level users
- Multiple slider deletion/modification events in short timeframes
Network Indicators:
- POST requests to /wp-admin/admin-ajax.php with 'action' parameter containing comparison-slider functions
SIEM Query:
source="wordpress.log" AND "admin-ajax.php" AND "comparison-slider" AND (user_role="subscriber" OR user_role="contributor" OR user_role="author" OR user_role="editor")🔗 References
- https://wordpress.org/plugins/comparison-slider/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ab68a08d-a6d4-4424-a7bf-219951f752fa?source=cve
- https://wordpress.org/plugins/comparison-slider/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ab68a08d-a6d4-4424-a7bf-219951f752fa?source=cve
