CVE-2017-7323 : Security Advisory and Response

In MODX Revolution 2.5.4-pl and previous versions, a vulnerability exists that allows attackers to execute arbitrary code by exploiting the lack of HTTPS protection during package updates and installations.

Understanding CVE-2017-7323

What is CVE-2017-7323?

The vulnerability in MODX Revolution versions prior to 2.5.4-pl enables attackers to perform arbitrary code execution by deceiving servers through the absence of HTTPS protection during package updates and installations.

The Impact of CVE-2017-7323

This vulnerability can be exploited by attackers to execute arbitrary code on affected systems, potentially leading to unauthorized access, data breaches, and system compromise.

Technical Details of CVE-2017-7323

Vulnerability Description

The issue lies in the default method used for updating and installing packages in MODX Revolution, which relies on http://rest.modx.com, allowing man-in-the-middle attacks and code execution.

Affected Systems and Versions

Affected Version: MODX Revolution 2.5.4-pl and earlier

Exploitation Mechanism

Attackers can exploit the vulnerability by intercepting communication between servers and clients during package updates or installations, enabling them to inject and execute malicious code.

Mitigation and Prevention

Immediate Steps to Take

Disable the default package update and installation method that uses http://rest.modx.com
Implement HTTPS protection for all communications within the MODX Revolution environment

Long-Term Security Practices

Regularly update MODX Revolution to the latest secure version
Conduct security audits and penetration testing to identify and address vulnerabilities

Patching and Updates

Apply patches or updates provided by MODX Revolution to fix the vulnerability and enhance system security