Ensure 'Control use of the File System API for writing' is set to 'Enabled: Don't allow any site to request write access to files and directories'

Trung bìnhCấp 1Tự độngedge

Mô tả

This policy setting specifies whether websites can ask for write access to the host operating system´s filesystem using the File System API. By default, websites can ask for access. Users can change this setting. By setting this policy to (2), access is denied. The recommended state for this setting is: Enabled: Don't allow any site to request write access to files and directories. Rationale: There is a large category of attack vectors that are opened by allowing web applications access to files. By setting this policy to Enabled: Don't allow any site to request write access to files and directories implements additional protection to safeguard against accidental sharing of sensitive inf... Audit reads the Group Policy registry value and prints 'compliant', 'unset' (policy not configured, reported as FAIL) or the non-compliant value. Registry value: HKLM\SOFTWARE\Policies\Microsoft\Edge:DefaultFileSystemWriteGuardSetting (REG_DWORD); compliant when it is 2. Remediation writes 2 locally; in a domain set it through the ADMX so Group Policy does not revert it.

Cách kiểm tra

Phương pháp kiểm tra: Windows Registry

registry

$v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge' -Name 'DefaultFileSystemWriteGuardSetting' -ErrorAction SilentlyContinue).'DefaultFileSystemWriteGuardSetting'; if ($null -eq $v) { 'unset' } elseif (($null -ne $v -and @(2) -contains [int64]$v)) { 'compliant' } else { "non-compliant: $v" }

Đầu ra mong đợi: compliant

Cách khắc phục

Phương pháp khắc phục: Lệnh shell

shell

$p = 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge'; if (-not (Test-Path -Path $p)) { New-Item -Path $p -Force | Out-Null }; New-ItemProperty -Path $p -Name 'DefaultFileSystemWriteGuardSetting' -Value 2 -PropertyType DWord -Force | Out-Null

Thuộc tính

Hệ điều hành: Bất kỳ
Thẻ: edgebrowsercis-l1
Tham chiếu: CIS Microsoft Edge Benchmark v5.0.0 - 1.4.6 Ensure 'Control use of the File System API for writing' is set to 'Enabled: Don't allow any site to request write access to files and directories'

Kiểm tra máy này

Chạy lệnh này trên máy bạn được phép kiểm tra. Lần quét chỉ ở chế độ đọc.

shell

tmaegis scan --target edge