CVE-2020-8283 : Security Advisory and Response

A vulnerability in Citrix Virtual Apps and Desktops allows an authorized user to execute arbitrary commands as SYSTEM on a Windows host.

Understanding CVE-2020-8283

This CVE identifies an issue in Citrix Virtual Apps and Desktops that could lead to privilege escalation.

What is CVE-2020-8283?

An authorized user on a Windows host running Citrix Universal Print Server can perform arbitrary command execution as SYSTEM in CVAD versions before 2009, 1912 LTSR CU1 hotfixes CTX285870 and CTX286120, 7.15 LTSR CU6 hotfix CTX285344, and 7.6 LTSR CU9.

The Impact of CVE-2020-8283

This vulnerability could allow an attacker to gain elevated privileges on the system, potentially leading to further compromise or unauthorized access.

Technical Details of CVE-2020-8283

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability stems from improper privilege management, specifically allowing an authorized user to execute commands as SYSTEM on a Windows host.

Affected Systems and Versions

Product: Citrix Virtual Apps and Desktops
Versions Affected: 2009, 1912 LTSR CU1 hotfixes CTX285870 and CTX286120, 7.15 LTSR CU6 hotfix CTX285344, and 7.6 LTSR CU9

Exploitation Mechanism

The vulnerability can be exploited by an authorized user on a Windows host running Citrix Universal Print Server to execute arbitrary commands as SYSTEM.

Mitigation and Prevention

Protecting systems from CVE-2020-8283 is crucial to maintaining security.

Immediate Steps to Take

Apply the necessary patches and updates provided by Citrix to address the vulnerability.
Monitor system activity for any signs of unauthorized command execution.

Long-Term Security Practices

Implement the principle of least privilege to restrict user capabilities and reduce the impact of potential exploits.
Regularly update and patch software to prevent known vulnerabilities from being exploited.

Patching and Updates

Ensure that all affected systems are updated with the latest patches and security fixes to mitigate the risk of exploitation.