CVE-2019-17066 Explained : Impact and Mitigation

This CVE-2019-17066 article provides insights into a vulnerability in Ivanti WorkSpace Control that allows users to elevate system privileges by manipulating user registries.

Understanding CVE-2019-17066

What is CVE-2019-17066?

Before version 10.4.40.0 of Ivanti WorkSpace Control, users could exploit a vulnerability to escalate their system privileges by tampering with specific user registries. The issue arises from pwrgrid.exe's initial verification of Current User registry hives (HKCU) when launching applications requiring elevated rights.

The Impact of CVE-2019-17066

The vulnerability could enable unauthorized users to gain elevated privileges on the system, potentially leading to unauthorized access and control.

Technical Details of CVE-2019-17066

Vulnerability Description

In Ivanti WorkSpace Control before version 10.4.40.0, users could exploit a flaw to elevate their system rights by manipulating certain user registries. This was possible because pwrgrid.exe checked the HKCU registry hives first when starting applications with elevated privileges.

Affected Systems and Versions

Product: Ivanti WorkSpace Control
Versions affected: Before 10.4.40.0

Exploitation Mechanism

The vulnerability allowed users to manipulate select user registries to gain elevated system privileges, potentially leading to unauthorized access and control.

Mitigation and Prevention

Immediate Steps to Take

Update Ivanti WorkSpace Control to version 10.4.40.0 or later to mitigate the vulnerability.
Monitor user registry changes for suspicious activities.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access rights.
Regularly audit and review user privileges and access levels.

Patching and Updates

Apply security patches and updates promptly to address known vulnerabilities and enhance system security.