CVE-2024-12579
📋 TL;DR
The Minify HTML WordPress plugin has a Regular Expression Denial of Service (ReDoS) vulnerability that allows unauthenticated attackers to submit specially crafted comments that cause catastrophic backtracking in regular expression processing. This can break website pages and potentially cause denial of service. All WordPress sites using this plugin up to version 2.1.10 are affected.
💻 Affected Systems
- Minify HTML 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
Complete website unavailability due to server resource exhaustion, potentially affecting multiple sites on shared hosting environments.
Likely Case
Individual page or post unavailability when malicious comments are processed, causing performance degradation.
If Mitigated
Minimal impact with proper input validation and rate limiting in place.
🎯 Exploit Status
Exploitation requires submitting specially crafted comments to vulnerable WordPress sites.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.11
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3203890/minify-html-markup
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Minify HTML plugin. 4. Click 'Update Now' if available, or manually update to version 2.1.11+. 5. Verify plugin is active and functioning.
🔧 Temporary Workarounds
Disable Comments
allTemporarily disable comments on WordPress site to prevent exploitation.
WordPress Settings → Discussion → Uncheck 'Allow people to submit comments on new posts'
Deactivate Plugin
allTemporarily deactivate Minify HTML plugin until patched.
WordPress Plugins → Installed Plugins → Find Minify HTML → Deactivate
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block malicious comment patterns
- Enable rate limiting on comment submission endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins → Minify HTML version. If version is 2.1.10 or lower, you are vulnerable.Check Version:
wp plugin list --name=minify-html --field=versionVerify Fix Applied:
After updating, verify Minify HTML plugin shows version 2.1.11 or higher in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- Unusually long processing times for comment submissions
- High CPU/memory usage spikes when processing comments
- HTTP 500 errors on pages with comments
Network Indicators:
- Multiple comment submissions with complex patterns
- Unusual traffic to comment submission endpoints
SIEM Query:
source="wordpress" AND (message="comment_post" OR message="wp-comments-post.php") AND duration>5s