External risk intelligence

Pulse Connect Secure: Authenticated Code Execution Risk

CVE advisoryKnown Exploit

CVE-2020-8243

A vulnerability in the Pulse Connect Secure administrative web interface allows authenticated attackers to upload custom templates, leading to arbitrary code execution. This impacts organizations by potentially compromising systems and data, posing significant business risk. The vulnerability has a high severity rating

4Halo Surface Signal

Code Injection

Ivanti Connect Secure

9.0 and earlier9.1

External exposure likelihood

Halo Surface Signal score for CVE-2020-8243

This vulnerability affects the Pulse Connect Secure administrative web interface. While ideally restricted to internal networks, these appliances are edge services, and the administrative surface is often reachable if the device is not configured to strictly isolate management traffic from the public-facing gateway.

Horizon Alert

Summary of the vulnerability and why it matters

The administrative web interface of Ivanti Pulse Connect Secure is affected by a vulnerability. This flaw allows an authenticated attacker to upload a custom template, potentially leading to the execution of arbitrary code. Such an event could compromise system integrity and data confidentiality.

  • Vulnerable component: Pulse Connect Secure admin interface.
  • Core weakness: Arbitrary code execution via template upload.
  • Main business impact: System compromise and data exposure.

Attack Path

How an attacker could exploit the issue

An authenticated attacker with administrative access could exploit a vulnerability within the Pulse Connect Secure admin web interface. This allows for the upload of a custom template, enabling arbitrary code execution. The impact on affected organizations includes potential compromise of systems and data.

  • Access to admin interface required.
  • Attacker uploads malicious template.
  • Arbitrary code execution achieved.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability in the Pulse Connect Secure administrative web interface could allow an authenticated attacker to execute arbitrary code. This could lead to significant business risk if exploited. The vulnerability has a high severity rating and is present in the administrative interface.

  • Attacker skill: Moderate
  • Access: Authenticated administrator
  • Business risk: High

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

An authenticated attacker could exploit this vulnerability to execute arbitrary code on affected systems. This could lead to unauthorized access and control, posing a significant risk to organizational data and operations. The primary concern involves unauthorized code execution on systems managing network access.

  • Identify all Ivanti Connect Secure and Policy Secure assets.
  • Restrict administrative access to these systems.
  • Apply vendor updates and verify fix.
  • Monitor for related malicious activity.

Frequently asked questions

What is Ivanti Connect Secure and its primary function?

Ivanti Connect Secure is an SSL VPN solution designed to provide secure remote and mobile access to corporate resources. It allows users to connect to internal networks and applications from any web-enabled device, ensuring data security during transit.

How does CVE-2020-8243 exploit systems, and what is the weakness class?

CVE-2020-8243 is a code injection vulnerability (CWE-94) where an authenticated attacker can upload a custom template to the admin web interface. This allows for arbitrary code execution on the affected appliance.

What is the trigger path for CVE-2020-8243 and what is the scope of impact?

An authenticated attacker with administrative privileges can upload a specially crafted template file through the admin web interface. This lack of input validation allows for the injection and execution of arbitrary code, potentially leading to a full system compromise. The scope is unchanged, meaning the impact is confined to the affected component.

What is the relevance of CVE-2020-8243, considering its network attack vector and administrative access requirement?

The vulnerability has a network attack vector and requires administrative privileges, meaning an attacker must first gain access to the admin interface. While ideally restricted, these appliances are edge services and their administrative surfaces can sometimes be reachable, increasing the relevance of this vulnerability.

What are the recommended actions to address the CVE-2020-8243 vulnerability?

Organizations should apply vendor-provided updates to affected Ivanti Connect Secure and Policy Secure versions. It is also recommended to restrict administrative access to trusted IP addresses and monitor for suspicious activity.

References