CVE-2023-36528
📋 TL;DR
This vulnerability allows attackers to manipulate star ratings on WordPress sites without proper authorization by exploiting IP spoofing. It affects all WordPress installations using the kk Star Ratings plugin versions up to 5.4.3. Attackers can artificially inflate or deflate ratings on posts and pages.
💻 Affected Systems
- kk Star Ratings WordPress Plugin
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could manipulate ratings to damage reputation, influence user behavior, or create false popularity signals that affect SEO and user trust.
Likely Case
Minor rating manipulation affecting content credibility, potentially leading to inaccurate user feedback and skewed analytics.
If Mitigated
With proper access controls and rate limiting, impact is limited to occasional rating anomalies that can be detected and corrected.
🎯 Exploit Status
Exploitation requires sending crafted HTTP requests with spoofed IP addresses to bypass rate limiting and authorization checks.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.4.4 and later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'kk Star Ratings' and click 'Update Now'. 4. Alternatively, download version 5.4.4+ from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the kk Star Ratings plugin until patched
wp plugin deactivate kk-star-ratings
Implement Web Application Firewall Rules
allBlock suspicious rating requests and implement IP-based rate limiting
🧯 If You Can't Patch
- Implement server-side IP validation and rate limiting at the web server level
- Monitor rating activity logs for unusual patterns and implement manual review
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for kk Star Ratings versionCheck Version:
wp plugin get kk-star-ratings --field=versionVerify Fix Applied:
Verify plugin version is 5.4.4 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Multiple rating submissions from same IP in short time
- Rating changes without corresponding page views
- Unusual rating patterns across content
Network Indicators:
- HTTP POST requests to /wp-admin/admin-ajax.php with 'action=kk_star_ratings' parameter
- Suspicious X-Forwarded-For header patterns
SIEM Query:
source="web_server_logs" AND uri="/wp-admin/admin-ajax.php" AND "action=kk_star_ratings" AND (status=200 OR status=302) | stats count by src_ip