Can you explain this vulnerability to me?

The News Element Elementor Blog Magazine plugin for WordPress has a vulnerability called Missing Authorization in all versions up to and including 1.0.8. This vulnerability arises because the plugin does not perform proper capability checks or nonce verification on the 'ne_clean_data' AJAX action.

As a result, authenticated users with Subscriber-level access or higher can exploit this flaw to truncate eight core WordPress database tables (including posts, comments, terms, and metadata tables) and delete the entire WordPress uploads directory.

This leads to complete data loss of the WordPress site content and media.

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How can this vulnerability impact me? :

This vulnerability can have severe impacts including complete data loss of your WordPress site.

• An attacker with at least Subscriber-level access can truncate eight core WordPress database tables, removing posts, comments, terms, and metadata.
• The attacker can also delete the entire uploads directory, erasing all media files such as images and documents.

Overall, this can result in the loss of all site content and media, potentially causing significant downtime and requiring restoration from backups.

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How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:

I don't know

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How can this vulnerability be detected on my network or system? Can you suggest some commands?

This vulnerability involves an AJAX action 'ne_clean_data' in the News Element Elementor Blog Magazine plugin that allows authenticated users with Subscriber-level access and above to truncate core WordPress database tables and delete the uploads directory.

To detect exploitation attempts on your system or network, you can monitor for AJAX requests targeting the 'ne_clean_data' action, especially POST requests made by authenticated users.

Suggested commands to detect such activity include:

• Using web server logs (e.g., Apache or Nginx), search for requests containing 'action=ne_clean_data':
• grep 'action=ne_clean_data' /var/log/apache2/access.log
• grep 'action=ne_clean_data' /var/log/nginx/access.log
• Monitor WordPress AJAX requests in real-time using tools like tcpdump or Wireshark filtering HTTP POST requests to admin-ajax.php with 'ne_clean_data' parameter.
• Example tcpdump filter: tcpdump -A -s 0 'tcp port 80 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)' | grep 'ne_clean_data'

Additionally, check for suspicious truncation or deletion of core WordPress tables (posts, comments, terms, etc.) and missing uploads directory contents as indicators of exploitation.

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What immediate steps should I take to mitigate this vulnerability?

Immediate mitigation steps include:

• Update the News Element Elementor Blog Magazine plugin to a version later than 1.0.8 where this vulnerability is fixed, if available.
• Restrict access to the plugin's AJAX actions by ensuring only trusted administrator-level users have access, as the vulnerability arises from missing authorization checks allowing Subscriber-level users to exploit it.
• Implement web application firewall (WAF) rules to block or monitor AJAX requests with the 'ne_clean_data' action parameter.
• Regularly back up your WordPress database and uploads directory to enable recovery in case of data loss.
• Audit user roles and permissions to ensure no untrusted users have elevated access that could exploit this vulnerability.

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