CVE-2017-1000223 : Security Advisory and Response

MODX Revolution CMS version 2.5.6 and earlier versions are vulnerable to stored web content injection (WCI) or XSS, allowing attackers to execute malicious JavaScript code through User Group names.

Understanding CVE-2017-1000223

This CVE identifies a critical vulnerability in MODX Revolution CMS that can lead to unauthorized access and privilege escalation.

What is CVE-2017-1000223?

The vulnerability in MODX Revolution CMS version 2.5.6 and prior versions enables an authenticated user with editing permissions to insert harmful JavaScript code within a User Group name, potentially compromising the CMS security.

The Impact of CVE-2017-1000223

Exploiting this vulnerability can result in attackers gaining control over unsuspecting users' accounts, potentially granting them full administrative control over the CMS and escalating their privileges.

Technical Details of CVE-2017-1000223

MODX Revolution CMS vulnerability details and affected systems.

Vulnerability Description

The vulnerability allows an authorized user to save malicious JavaScript code within a User Group name, leading to potential account takeovers and privilege escalation.

Affected Systems and Versions

MODX Revolution CMS version 2.5.6 and earlier

Exploitation Mechanism

An authenticated user with editing permissions can exploit the vulnerability by inserting harmful JavaScript code within a User Group name.

Mitigation and Prevention

Protecting systems from CVE-2017-1000223.

Immediate Steps to Take

Update MODX Revolution CMS to version 2.5.7 or later to patch the vulnerability.
Monitor User Group names for suspicious JavaScript code.

Long-Term Security Practices

Regularly review and update CMS security configurations.
Educate users on safe naming conventions for User Groups.

Patching and Updates

Stay informed about security updates and patches for MODX Revolution CMS to address vulnerabilities promptly.