External risk intelligence

Open Management Infrastructure Remote Code Execution Vulnerability

CVE advisoryKnown Exploit

CVE-2021-38647

The Open Management Infrastructure component in certain Microsoft Azure services is vulnerable, allowing remote code execution. This poses a risk of unauthorized access and control, potentially leading to data breaches or service disruptions. The primary business risk involves the compromise of affected systems and dat

4Halo Surface Signal

Remote Code Execution

Microsoft Azure Automation State Configuration

External exposure likelihood

Halo Surface Signal score for CVE-2021-38647

Open Management Infrastructure (OMI) is frequently deployed as an agent within cloud environments and Linux systems to facilitate remote management and monitoring. While not always intended for public exposure, these management interfaces are often networked and accessible across service boundaries, making them common targets in infrastructure and cloud-based deployments.

Horizon Alert

Summary of the vulnerability and why it matters

Certain Microsoft Azure services and related components are vulnerable due to an issue within the Open Management Infrastructure (OMI) component. This flaw allows attackers to execute arbitrary code remotely. The potential impact includes unauthorized access and control over affected systems, leading to data breaches or service disruptions.

  • Vulnerable Azure services and OMI
  • Remote code execution flaw
  • Compromised systems and data

Attack Path

How an attacker could exploit the issue

A remote attacker could gain unauthorized access to an organization's systems through an exposed management interface. This access allows the attacker to execute arbitrary code, potentially leading to the compromise of sensitive data and disruption of services. The attack leverages unauthenticated access to trigger remote code execution.

  • Exposed management interface
  • Unauthenticated network access
  • Trigger arbitrary code execution

Live Threat

Current exploitation, exposure, and threat context

This vulnerability presents a significant threat due to its potential for remote code execution. Attackers with a high skill level could exploit this by remotely accessing vulnerable systems, bypassing authentication, and executing malicious code. The impact could include unauthorized access to sensitive data, disruption of business operations, and the compromise of critical systems. Organizations should prioritize addressing this vulnerability to mitigate substantial business risk.

  • High attacker skill level likely.
  • Network access, no special conditions needed.
  • High business risk and urgency.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability allows for remote code execution within an organization's systems. Attackers can exploit this to gain unauthorized control over affected infrastructure, potentially leading to data compromise or disruption of services. The impact is significant, as it directly affects the integrity and availability of systems managed by Azure services.

  • Find exposed Azure management interfaces.
  • Limit network access to these interfaces.
  • Apply vendor fixes and validate.
  • Monitor for related activities.

Frequently asked questions

What is Azure Open Management Infrastructure (OMI) and its role in system management?

Azure Open Management Infrastructure (OMI) is a key component in various Microsoft Azure services, acting as an agent for remote management and monitoring, particularly on cloud environments and Linux systems. Its primary function is to enable the control and observation of these systems from a distance.

What type of weakness does CVE-2021-38647 represent?

CVE-2021-38647 signifies a critical Remote Code Execution vulnerability. This classification indicates that an attacker can execute unauthorized code on a vulnerable system remotely, potentially leading to a complete compromise of the system.

How can CVE-2021-38647 be triggered and what is the scope of its impact?

This vulnerability can be exploited through an exposed management interface, allowing for unauthenticated network access. An attacker can trigger arbitrary code execution without needing special conditions, impacting the integrity and availability of managed systems.

What is the significance of CVE-2021-38647 according to Halo Surface Signal?

Halo Surface Signal assesses CVE-2021-38647 as 'Likely' to be exploited. This is because OMI is commonly deployed as a networked agent in cloud environments for management and monitoring, making these interfaces frequent targets for attackers.

What are the recommended steps to address the OMI vulnerability?

To mitigate this vulnerability, organizations should identify exposed Azure management interfaces, restrict network access to them, and promptly apply vendor-provided fixes. Continuous monitoring for related malicious activities is also advised to ensure system security.

References