Citrix Workspace App for Windows 부적절한 접근 제어 취약점 (CVE-2019-11634) 보안 권고

# Citrix Workspace App 최신 설치 파일 다운로드 및 무인 설치 실행
Start-Process -FilePath 'CitrixWorkspaceApp.exe' -ArgumentList '/silent /includeSSON /rcu' -Wait -NoNewWindow

# 레지스트리를 통한 클라이언트 드라이브 리디렉션 비활성화
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Citrix\ICA Client\Engine\Configuration\Advanced\Modules\ClientDrive' -Name 'ClientDriveRedirection' -PropertyType 'String' -Value 'Off' -Force

$citrixPath = Get-ItemProperty -Path 'HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*' | Where-Object { $_.DisplayName -like '*Citrix Workspace*' }
if ($citrixPath) {
    $version = $citrixPath.DisplayVersion
    Write-Host 'Detected Citrix Workspace Version:' $version
    # 19.4.0 (1904) 미만 버전 검증
    if ([System.Version]$version -lt [System.Version]'19.4.0') {
        Write-Error 'VULNERABLE: Please upgrade to version 1904 or higher immediately.'
    } else {
        Write-Host 'SECURE: Version is up to date.' -ForegroundColor Green
    }
} else {
    Write-Host 'Citrix Workspace App is not installed on this system.'
}