CVE-2019-16318 : Security Advisory and Response

Pimcore versions prior to 5.7.1 had a security vulnerability allowing attackers to bypass file-extension restrictions. This CVE is distinct from CVE-2019-10867 and CVE-2019-16317.

Understanding CVE-2019-16318

This CVE pertains to a security vulnerability in Pimcore versions prior to 5.7.1 that enables attackers to evade file-extension restrictions.

What is CVE-2019-16318?

In Pimcore versions before 5.7.1, attackers with limited privileges can bypass file-extension restrictions by using a 256-character filename, which circumvents the automatic renaming feature.

The Impact of CVE-2019-16318

This vulnerability allows attackers to upload malicious files with PHP extensions, posing a risk of executing arbitrary code on the server.

Technical Details of CVE-2019-16318

This section provides more technical insights into the vulnerability.

Vulnerability Description

Attackers can exploit this vulnerability to upload files with PHP extensions, potentially leading to remote code execution.

Affected Systems and Versions

Pimcore versions prior to 5.7.1 are affected by this vulnerability.

Exploitation Mechanism

Attackers can upload files with PHP extensions by using a 256-character filename, bypassing the file-extension restrictions.

Mitigation and Prevention

Protect your systems from CVE-2019-16318 with the following steps:

Immediate Steps to Take

Update Pimcore to version 5.7.1 or later to patch the vulnerability.
Implement file upload restrictions to prevent malicious file uploads.

Long-Term Security Practices

Regularly monitor and audit file uploads on your system.
Educate users on safe file upload practices to prevent security risks.

Patching and Updates

Stay informed about security updates for Pimcore and apply patches promptly to mitigate risks.