7

I've got an existing named pipe, say \\.\pipe\my_pipe. How can I, from cmd or powershell, get the ACL/Permissions of the pipe ?

Rob
  • 14,746
  • 28
  • 47
  • 65
Pierre Gayvallet
  • 2,933
  • 2
  • 23
  • 37
  • 2
    [accesschk](https://learn.microsoft.com/en-us/sysinternals/downloads/accesschk) checks a named pipe when the path is prefixed with "\pipe", e.g. `accesschk -lv \pipe\InitShutdown`. – Eryk Sun Feb 22 '18 at 09:25

4 Answers4

1

There is a great tool NtObjectManager by James Forshaw. After installing it, open PowerShell with Admin rights and run:

PS C:\WINDOWS\system32> $a = Get-NtNamedPipeFile "\Device\NamedPipe\spoolss"
PS C:\WINDOWS\system32> $a.SecurityDescriptor.Dacl

Type    User                         Flags Mask
----    ----                         ----- ----
Allowed BUILTIN\Users                None  00100003
Allowed Everyone                     None  001201BB
Allowed NT AUTHORITY\ANONYMOUS LOGON None  001201BB
Allowed CREATOR OWNER                None  001F01FF
Allowed NT AUTHORITY\SYSTEM          None  001F01FF
Allowed BUILTIN\Administrators       None  001F01FF
E235
  • 11,560
  • 24
  • 91
  • 141
0

This tool helps - https://learn.microsoft.com/en-us/sysinternals/downloads/accesschk

In PowerShell: .\accesschk64.exe \.\pipe<name>

aquaknight
  • 11
  • 5
    Building an answer based on existing comments is acceptable, but you ought to credit the comment author (in this case [@ErykSun](https://stackoverflow.com/questions/48923402/how-to-see-named-pipe-permission-from-command-line-on-windows#comment84853676_48923402)) – Ben Voigt Feb 11 '21 at 22:43
0

To expand upon this answer from another post:

Get-ChildItem \\.\pipe\ | ForEach-Object -ErrorAction SilentlyContinue GetAccessControl

You can also use Get-Member to help you navigate the FileSecurity object:

Get-ChildItem \\.\pipe\ | ForEach-Object -ErrorAction SilentlyContinue GetAccessControl | Get-Member
carrvo
  • 511
  • 5
  • 11
-1

ls '\\.\pipe\' | % { try{ $_.GetAccessControl() } catch{"nope"}}

cyberjitz
  • 17
  • 1
  • 5