CVE-2023-0495
📋 TL;DR
This vulnerability in the HT Slider For Elementor WordPress plugin allows attackers to trick logged-in administrators into activating arbitrary plugins via Cross-Site Request Forgery (CSRF) attacks. It affects WordPress sites using vulnerable versions of the plugin, potentially enabling attackers to activate malicious plugins that could lead to further compromise.
💻 Affected Systems
- HT Slider For Elementor WordPress plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could activate malicious plugins that execute arbitrary code, leading to complete site takeover, data theft, or malware distribution.
Likely Case
Attackers activate plugins that create backdoors, inject malicious content, or escalate privileges for further attacks.
If Mitigated
With proper CSRF protections and admin awareness, exploitation attempts would fail, limiting impact to failed attack attempts.
🎯 Exploit Status
Exploitation requires social engineering to trick an admin into clicking a malicious link while authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.4.0
Vendor Advisory: https://wpscan.com/vulnerability/2e3af480-b1a4-404c-b0fc-2b7b6a6b9c27
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'HT Slider For Elementor'. 4. Click 'Update Now' if available, or download version 1.4.0+ from WordPress repository. 5. Activate the updated plugin.
🔧 Temporary Workarounds
Implement CSRF Protection
allAdd custom CSRF tokens to plugin activation requests via custom code or security plugin.
Restrict Admin Access
linuxLimit admin panel access to trusted IP addresses only.
# Add to .htaccess for Apache:
Order deny,allow
Deny from all
Allow from 192.168.1.0/24
Allow from 10.0.0.0/8
# Add to nginx config:
location /wp-admin {
allow 192.168.1.0/24;
allow 10.0.0.0/8;
deny all;
}
🧯 If You Can't Patch
- Deactivate and remove the HT Slider For Elementor plugin completely.
- Implement web application firewall (WAF) rules to block CSRF attacks targeting plugin activation endpoints.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for HT Slider For Elementor version. If version is below 1.4.0, the site is vulnerable.Check Version:
wp plugin list --name='ht-slider-for-elementor' --field=versionVerify Fix Applied:
Confirm plugin version is 1.4.0 or higher in WordPress admin panel. Test CSRF protection by attempting to activate a plugin via forged request (use security testing tools).📡 Detection & Monitoring
Log Indicators:
- Multiple plugin activation requests from same admin session in short timeframe
- Plugin activation requests with missing or invalid nonce tokens
- Unexpected plugin activations in WordPress activity logs
Network Indicators:
- HTTP POST requests to /wp-admin/admin-ajax.php with action=activate-plugin without proper referrer headers
- Requests containing plugin activation parameters from unexpected sources
SIEM Query:
source="wordpress.log" AND ("activate-plugin" OR "plugin activated") AND NOT user_agent="WordPress/*"