Horizon Alert
Summary of the vulnerability and why it matters
This vulnerability in the Piotnet Addons for Elementor Pro WordPress plugin allows unauthenticated attackers to upload malicious files to the server. This could potentially lead to the execution of arbitrary code on your website.
- Reachable from the internet.
- Requires a file upload field to be present.
Attack Path
How an attacker could exploit the issue
An unauthenticated attacker could exploit this flaw by uploading a malicious file, such as a PHP web shell, through a form created by the Piotnet Addons for Elementor Pro plugin. This is possible because the plugin fails to properly validate uploaded file types, allowing dangerous extensions like `.phar` or `.phtml` to bypass security checks. Successful exploitation could lead to remote code execution on the target server.
- Requires a file field in form.
- Target is a form builder function.
- Unauthenticated remote access.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability in the Piotnet Addons for Elementor Pro plugin allows unauthenticated attackers to upload arbitrary files, potentially leading to remote code execution. While the vulnerability requires a file field to be added to a form for exploitation, the absence of comprehensive file type validation on the server-side is a significant weakness. Attackers may find this appealing due to the widespread use of WordPress and Elementor for website creation, making vulnerable sites a common target.
- Unauthenticated remote code execution possible.
- Incomplete extension blacklist.
- Exploitable via form file fields.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Focus on identifying and blocking malicious traffic targeting the Piotnet Addons for Elementor Pro plugin, as it allows unauthenticated attackers to upload arbitrary files. Prioritize investigating any form submissions that may have been used to exploit this vulnerability to assess the extent of potential code execution.
- Block uploads via the 'pafe_ajax_form_builder' endpoint.
- Monitor for unusual file uploads or execution.
- Update Piotnet Addons for Elementor Pro to version 7.1.71 or later.
