CVE-2023-47129 : Exploit Details and Defense Strategies

Statmic is a core Laravel content management system Composer package. Prior to versions 3.4.13 and 4.33.0, on front-end forms with an asset upload field, PHP files crafted to look like images may be uploaded. This only affects forms using the "Forms" feature and not just any arbitrary form. This does not affect the control panel. This issue has been patched in 3.4.13 and 4.33.0.

Understanding CVE-2023-47129

This CVE involves a vulnerability in Statamic CMS that allows remote code execution through front-end form uploads.

What is CVE-2023-47129?

The CVE-2023-47129 relates to unrestricted file upload, specifically PHP files disguised as images, leading to potential remote code execution.

The Impact of CVE-2023-47129

The impact of this vulnerability is rated as HIGH, affecting confidentiality, integrity, and availability, with no privileges required for exploitation.

Technical Details of CVE-2023-47129

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows malicious actors to upload PHP files posing as images through front-end forms, potentially leading to remote code execution.

Affected Systems and Versions

The vulnerability affects versions prior to 3.4.13 and 4.33.0 of the Statamic CMS.

Exploitation Mechanism

The exploitation involves crafting PHP files to appear as images and uploading them through asset upload fields in front-end forms.

Mitigation and Prevention

Protecting systems from CVE-2023-47129 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Statamic CMS to version 3.4.13 or 4.33.0 to mitigate the vulnerability.
Review and restrict file upload permissions to prevent unauthorized uploads.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Implement strict file upload validation to disallow potentially dangerous file types.

Patching and Updates

Always stay informed about security advisories and promptly apply patches and updates to maintain system integrity.