Horizon Alert
Summary of the vulnerability and why it matters
This advisory details a critical vulnerability found in Mura CMS. The issue allows remote attackers to execute arbitrary code by manipulating a specific API endpoint. This could lead to a complete compromise of affected systems.
- Unchecked data allows code execution.
- It's critical for public-facing systems.
- Confirm relevance and potential exposure.
Attack Path
How an attacker could exploit the issue
An attacker could exploit this vulnerability by sending a specially crafted POST request to a specific API endpoint within Mura CMS. This request would leverage a weakness in how the system handles the "method" parameter, allowing the attacker to inject malicious code. If successful, this could lead to arbitrary code execution on the server, enabling an attacker to compromise the entire system.
- No authentication or special access required.
- Triggered via a crafted POST request to an API endpoint.
- Leads to remote code execution and system compromise.
Live Threat
Current exploitation, exposure, and threat context
The vulnerability in Mura CMS could allow an unauthenticated remote attacker to execute arbitrary code by exploiting an improperly validated method parameter in the JSON API endpoint. This could lead to a full system compromise.
- Arbitrary code execution on the server.
- Via unauthenticated API request to `/index.cfm/_api/json/v1/default`.
- Complete system compromise.
Operational Fix
Recommended remediation, mitigation, and detection steps
This critical remote code execution vulnerability in Mura CMS affects the API endpoint. Responsibility for addressing this likely falls to the platform or application owner team responsible for the CMS, in coordination with infrastructure and security teams to assess and manage risk. The first practical step involves identifying all instances of the affected Mura CMS, confirming their exposure and business criticality, and then planning remediation based on the identified risk profile.
- Platform or application owners should manage.
- Verify system reachability and criticality.
- Plan remediation based on identified risk.
