External risk intelligence

Ivanti CSA Code Injection Vulnerability

CVE advisoryKnown Exploit

CVE-2021-44529

A code injection vulnerability affects the Ivanti EPM Cloud Services Appliance. This allows unauthenticated users to execute arbitrary code, posing a risk of unauthorized system access and potential data compromise. The business risk is significant due to the potential for attackers to gain limited control over affecte

5Halo Surface Signal

Code Injection

Ivanti Endpoint Manager Cloud Services Appliance

4.5 and earlier4.6

External exposure likelihood

Halo Surface Signal score for CVE-2021-44529

The affected product, the Ivanti Cloud Services Appliance (CSA), is designed specifically to act as an internet-facing gateway or edge appliance to manage endpoints outside the corporate network. Because its primary purpose in normal deployment is to reside on the network edge to facilitate remote communication, it is inherently exposed to the public internet.

Horizon Alert

Summary of the vulnerability and why it matters

The Ivanti Endpoint Manager Cloud Services Appliance (CSA) is susceptible to a code injection vulnerability. This flaw permits an unauthenticated user to inject and execute arbitrary code. This could lead to unauthorized actions and potential compromise of the affected systems.

  • Ivanti Endpoint Manager Cloud Services Appliance
  • Unauthenticated code injection
  • Arbitrary code execution

Attack Path

How an attacker could exploit the issue

An unauthenticated attacker can exploit a code injection vulnerability in the Ivanti EPM Cloud Services Appliance. This occurs when the appliance is exposed externally. The attacker initiates the exploit, leading to the execution of arbitrary code with limited privileges on the affected system.

  • External exposure of the appliance.
  • Unauthenticated attacker gains access.
  • Arbitrary code execution with limited permissions.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability allows an unauthenticated user to execute arbitrary code on the Ivanti EPM Cloud Services Appliance (CSA). The impact is the potential for unauthorized code execution with limited permissions, which could lead to further system compromise. The CVSS score indicates a critical severity, suggesting a significant risk to affected organizations.

  • Attackers with low skill level.
  • No access or conditions required.
  • Treat as urgent due to high risk.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in the Ivanti Cloud Services Appliance (CSA) allows for code injection, potentially enabling attackers to execute arbitrary code. Given the external exposure of this appliance and its critical severity, immediate action is necessary to protect organizational assets and data. The focus should be on identifying and securing all instances of the affected product.

  • Find all Ivanti CSA instances.
  • Restrict network access to Ivanti CSA.
  • Apply vendor updates and verify.
  • Monitor for suspicious activity.

Frequently asked questions

What is the Ivanti Endpoint Manager Cloud Services Appliance (CSA)?

The Ivanti Endpoint Manager Cloud Services Appliance (CSA) is a component designed to manage devices outside of a company's internal network, serving as a gateway for remote endpoint management.

What type of weakness does CVE-2021-44529 represent and what is its classification?

CVE-2021-44529 represents a code injection vulnerability, classified under CWE-94. This weakness allows for the injection and subsequent execution of malicious code by an attacker.

How can an attacker exploit CVE-2021-44529, and what are the limitations on the execution scope?

An unauthenticated attacker can trigger this vulnerability, leading to arbitrary code execution with limited permissions, specifically as the 'nobody' user.

What is the relevance of the Ivanti CSA being exposed externally in relation to CVE-2021-44529?

The Ivanti Cloud Services Appliance (CSA) is intentionally designed as an internet-facing gateway for managing remote endpoints. This inherent external exposure makes it a prime target for exploitation of vulnerabilities like CVE-2021-44529, as it is accessible from the public internet.

What are the recommended practical steps to address the Ivanti CSA code injection vulnerability?

Organizations should identify all Ivanti CSA instances, restrict network access to them, promptly apply vendor updates, and monitor for any suspicious activity to mitigate the risks associated with this vulnerability.

References