1. Introduction
Mura CMS Detection identifies instances of the Mura content management system running on a web server. Mura is an open source ColdFusion-based CMS, and its presence indicates potential exposure to known vulnerabilities affecting that platform. Successful exploitation could lead to data breaches, website defacement, or denial of service. This affects systems hosting websites built with Mura CMS. A likely impact is compromise of confidentiality, integrity, and availability.
2. Technical Explanation
Mura CMS is a web application written in ColdFusion. It allows users to create and manage website content. The vulnerability lies in identifying the presence of this software on a server, which then flags it for further assessment due to potential known security issues within the Mura platform itself. There isn’t a specific CVE associated with *detection* of Mura CMS; however, vulnerabilities exist within the CMS code that are discovered over time. An attacker could identify a running instance and attempt to exploit any unpatched flaws in the CMS version.
- Root cause: The presence of identifiable Mura CMS files and directories on the web server.
- Exploit mechanism: An attacker would scan for known file paths or headers associated with Mura CMS, then attempt exploitation using publicly available exploits targeting specific versions. For example, an attacker might try to access a default administrative page without authentication if a vulnerability exists in version 7.3.0.
- Scope: Affected platforms are web servers running ColdFusion that host Mura CMS installations. Specific versions depend on the identified instance and associated vulnerabilities.
3. Detection and Assessment
Confirming whether a system is vulnerable involves identifying if Mura CMS is installed. A quick check can be done via browser access, while thorough assessment requires file system inspection.
- Quick checks: Access the base URL of the website in a web browser and look for tell-tale signs like “Powered by Mura” in the footer or specific directory structures such as /mura/.
- Scanning: Nessus plugin ID 16348 can detect Mura CMS. OpenVAS also has relevant checks, but results should be verified. These are examples only.
- Logs and evidence: Web server access logs may show requests for files within the /mura/ directory or references to ColdFusion components associated with Mura CMS.
curl -I https://example.com | grep "Server: ColdFusion"4. Solution / Remediation Steps
Fixing this issue requires assessing the Mura installation and applying appropriate updates or mitigations. The steps below focus on identifying and patching/upgrading the CMS.
4.1 Preparation
- Ensure you have access credentials for the Mura CMS administrative interface. A roll back plan involves restoring from the pre-patch backup.
- A change window may be required depending on the size of the website and potential downtime. Approval from the application owner is recommended.
4.2 Implementation
- Step 1: Log in to the Mura CMS administrative interface.
- Step 2: Check the current version of Mura CMS under System > Settings > General Information.
- Step 3: Visit https://www.getmura.com/ and check for available updates that address known security vulnerabilities.
- Step 4: Download and install the latest stable version of Mura CMS, following the official documentation.
- Step 5: Verify the installation by checking the version number again in System > Settings > General Information.
4.3 Config or Code Example
Before
// Old version number (example)
Version: 7.2.5After
// Updated version number (example)
Version: 7.3.84.4 Security Practices Relevant to This Vulnerability
Practices that directly address this vulnerability type include regular patching and secure configuration management.
- Practice 1: Implement a patch cadence for all software, including CMS platforms like Mura, to quickly address known vulnerabilities.
- Practice 2: Follow the principle of least privilege by limiting access to administrative interfaces and sensitive files.
4.5 Automation (Optional)
# Example PowerShell script to check Mura version (requires access to CMS API - use with caution)
# $apiUrl = "https://example.com/mura/api/version"
# Invoke-RestMethod -Uri $apiUrl | Select-Object Version5. Verification / Validation
Confirm the fix by verifying the updated version number and performing a basic website smoke test.
- Post-fix check: Log in to the Mura CMS administrative interface and confirm the version is now 7.3.8 or later.
- Re-test: Re-run the quick checks described in Section 3, ensuring that no vulnerable files are detected.
- Smoke test: Verify key website functionality such as content display, form submissions, and user authentication still work correctly.
- Monitoring: Monitor web server logs for any errors related to Mura CMS or ColdFusion components. Example query: “ColdFusion” AND “error”.
curl -I https://example.com | grep "Server: ColdFusion"6. Preventive Measures and Monitoring
Update security baselines to include the latest Mura CMS version requirements. Implement checks in CI/CD pipelines to prevent deployment of vulnerable versions.
- Baselines: Update your web server security baseline to require a minimum supported version of Mura CMS.
- Asset and patch process: Establish a regular review cycle (e.g., monthly) for identifying and applying updates to all installed software, including Mura CMS.
7. Risks, Side Effects, and Roll Back
Risks include potential website downtime during patching or compatibility issues with existing plugins. Roll back involves restoring from the pre-patch backup.
- Risk or side effect 1: Patching may cause temporary website downtime. Mitigate by performing updates during off-peak hours and testing in a staging environment first.
- Roll back: 1) Stop the web server service. 2) Restore the website files and database from the pre-patch backup. 3) Restart the web server service.
8. References and Resources
- Vendor advisory or bulletin: https://www.getmura.com/security-updates/
- NVD or CVE entry: No specific CVE for detection, but search NVD for Mura CMS vulnerabilities.
- Product or platform documentation relevant to the fix: https://docs.getmura.com/