CVE-2023-40035 : What You Need to Know

Craft CMS is vulnerable to remote code execution via validatePath bypass, potentially leading to malicious control of systems. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2023-40035

Craft CMS allows attackers to bypass validatePath, resulting in remote code execution that can compromise system integrity and expose sensitive data.

What is CVE-2023-40035?

Craft CMS is a content management system for creating web experiences. Exploiting a flaw in the validatePath function allows attackers to execute remote code, posing a significant security risk.

The Impact of CVE-2023-40035

The vulnerability enables unauthorized users to gain system control, exfiltrate data, and potentially disrupt services. Threat actors can exploit this issue to compromise confidentiality, integrity, and availability.

Technical Details of CVE-2023-40035

Craft CMS versions 4.0.0-RC1 to 4.4.14 and versions 3.0.0 to 3.8.14 are affected by this vulnerability, which has been addressed in versions 4.4.15 and 3.8.15.

Vulnerability Description

By exploiting the validatePath function, attackers can execute arbitrary code remotely, bypassing security controls and gaining unauthorized access to the system.

Affected Systems and Versions

Craft CMS versions >= 4.0.0-RC1, < 4.4.15, and versions >= 3.0.0, < 3.8.15 are vulnerable to this remote code execution issue.

Exploitation Mechanism

Attackers can leverage the bypass of validatePath to execute malicious code remotely, potentially leading to system compromise and data breaches.

Mitigation and Prevention

Take immediate steps to secure Craft CMS installations and implement long-term security measures to prevent similar vulnerabilities.

Immediate Steps to Take

Update Craft CMS to version 4.4.15 or 3.8.15 to mitigate the vulnerability and protect systems from remote code execution attacks.

Long-Term Security Practices

Regularly update CMS versions, apply security patches promptly, restrict admin privileges, and monitor for unauthorized access attempts.

Patching and Updates

Craft CMS has released versions 4.4.15 and 3.8.15 to address the remote code execution vulnerability via validatePath bypass. Ensure timely installation of these updates to enhance system security and protect against potential exploitation.