CVE-2024-49257
📋 TL;DR
This vulnerability allows attackers to upload arbitrary files, including web shells, to WordPress servers running the Azz Anonim Posting plugin. Attackers can gain full control of affected web servers by uploading malicious PHP files. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- WordPress Azz Anonim Posting 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 server compromise leading to data theft, ransomware deployment, or use as part of a botnet.
Likely Case
Web shell installation allowing remote code execution, data exfiltration, and lateral movement within the network.
If Mitigated
File uploads blocked or restricted to safe types, preventing malicious file execution.
🎯 Exploit Status
Simple HTTP POST request with malicious file upload bypasses file type restrictions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://patchstack.com/database/vulnerability/azz-anonim-posting/wordpress-azz-anonim-posting-plugin-0-9-arbitrary-file-upload-vulnerability?_s_id=cve
Restart Required: No
Instructions:
1. Remove the Azz Anonim Posting plugin from WordPress. 2. Delete all plugin files from wp-content/plugins/azz-anonim-posting. 3. Verify no malicious files were uploaded during exploitation.
🔧 Temporary Workarounds
Disable Plugin
allDeactivate and remove the vulnerable plugin from WordPress
wp plugin deactivate azz-anonim-posting
wp plugin delete azz-anonim-posting
Web Server File Restriction
allConfigure web server to block execution of uploaded files in upload directories
# Apache: Add to .htaccess in uploads directory
<FilesMatch "\.(php|php5|php7|phtml|phar)$">
Order Allow,Deny
Deny from all
</FilesMatch>
# Nginx: Add to server block
location ~* /wp-content/uploads/.*\.php$ {
deny all;
}
🧯 If You Can't Patch
- Immediately disable the Azz Anonim Posting plugin in WordPress admin panel
- Implement WAF rules to block file uploads containing PHP code or web shell signatures
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel for Azz Anonim Posting plugin version 0.9 or earlierCheck Version:
wp plugin list | grep azz-anonim-postingVerify Fix Applied:
Confirm plugin is removed from wp-content/plugins directory and deactivated in WordPress📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to upload endpoints with PHP file extensions
- Unusual file creations in wp-content/uploads directory
Network Indicators:
- POST requests with file uploads to plugin-specific endpoints
- Subsequent connections to uploaded PHP files
SIEM Query:
source="web_server" (method="POST" AND uri="*azz-anonim-posting*" AND file_extension="php")