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file version for C:\windows\system32\drivers\srv.sys

trilobite_rex

trying to create a way to verify the version number of this file, and not having any luck doing it.

tried powershell get-info command

PS P:\> (get-item c:\windows\system32\drivers\srv.sys).VersionInfo

Get-Item : Cannot find path 'C:\windows\system32\drivers\srv.sys' beca

At line:1 char:10

+ (get-item <<<< c:\windows\system32\drivers\srv.sys).VersionInfo

+ CategoryInfo : ObjectNotFound: (C:\windows\system32\dri

eption

+ FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Command

and got nothing.

any ideas?

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faceplate23

I have the same problem. When I do an ls on that directory I get this output.

Output: ==============================================

Directory: C:\Windows\system32\drivers

Mode LastWriteTime Length Name
---- ------------- ------ ----
d---- 9/30/2013 5:20 PM en-US
d---- 8/22/2013 11:46 AM UMDF
-a--- 6/18/2013 8:17 AM 3440660 gm.dls
-a--- 6/18/2013 8:17 AM 646 gmreadme.txt

It doesnt show any of the .sys files that I need. My guess is this is a permission issue, but I cannot figure out what the fix is.

trilobite_rex

So I found this today,

[reflection.assembly]::LoadWithPartialName("System.Version")

$os = Get-WmiObject -class Win32_OperatingSystem

$osName = $os.Caption

$s = "%systemroot%\system32\drivers\srv.sys"

$v = [System.Environment]::ExpandEnvironmentVariables($s)

If (Test-Path "$v")

{

Try

{

$versionInfo = (Get-Item $v).VersionInfo

$versionString = "$($versionInfo.FileMajorPart).$($versionInfo.FileMinorPart).$($versionInfo.FileBuildPart).$($versionInfo.FilePrivatePart)"

$fileVersion = New-Object System.Version($versionString)

}

Catch

{

Write-Host "Unable to retrieve file version info, please verify vulnerability state manually." -ForegroundColor Yellow

Return

}

Else

{

Write-Host "Srv.sys does not exist, please verify vulnerability state manually." -ForegroundColor Yellow

Return

}

if ($osName.Contains("Vista") -or ($osName.Contains("2008") -and -not $osName.Contains("R2")))

{

if ($versionString.Split('.')[3][0] -eq "1")

{

$currentOS = "$osName GDR"

$expectedVersion = New-Object System.Version("6.0.6002.19743")

}

elseif ($versionString.Split('.')[3][0] -eq "2")

{

$currentOS = "$osName LDR"

$expectedVersion = New-Object System.Version("6.0.6002.24067")

}

else

{

$currentOS = "$osName"

$expectedVersion = New-Object System.Version("9.9.9999.99999")

}

elseif ($osName.Contains("Windows 7") -or ($osName.Contains("2008 R2")))

{

$currentOS = "$osName LDR"

$expectedVersion = New-Object System.Version("6.1.7601.23689")

}

elseif ($osName.Contains("Windows 8.1") -or $osName.Contains("2012 R2"))

{

$currentOS = "$osName LDR"

$expectedVersion = New-Object System.Version("6.3.9600.18604")

}

elseif ($osName.Contains("Windows 8") -or $osName.Contains("2012"))

{

$currentOS = "$osName LDR"

$expectedVersion = New-Object System.Version("6.2.9200.22099")

}

elseif ($osName.Contains("Windows 10"))

{

if ($os.BuildNumber -eq "10240")

{

$currentOS = "$osName TH1"

$expectedVersion = New-Object System.Version("10.0.10240.17319")

}

elseif ($os.BuildNumber -eq "10586")

{

$currentOS = "$osName TH2"

$expectedVersion = New-Object System.Version("10.0.10586.839")

}

elseif ($os.BuildNumber -eq "14393")

{

$currentOS = "$($osName) RS1"

$expectedVersion = New-Object System.Version("10.0.14393.953")

}

elseif ($os.BuildNumber -eq "15063")

{

$currentOS = "$osName RS2"

"No need to Patch. RS2 is released as patched. "

return

}

elseif ($osName.Contains("2016"))

{

$currentOS = "$osName"

$expectedVersion = New-Object System.Version("10.0.14393.953")

}

elseif ($osName.Contains("Windows XP"))

{

$currentOS = "$osName"

$expectedVersion = New-Object System.Version("5.1.2600.7208")

}

elseif ($osName.Contains("Server 2003"))

{

$currentOS = "$osName"

$expectedVersion = New-Object System.Version("5.2.3790.6021")

}

else

{

Write-Host "Unable to determine OS applicability, please verify vulnerability state manually." -ForegroundColor Yellow

$currentOS = "$osName"

$expectedVersion = New-Object System.Version("9.9.9999.99999")

}

Write-Host "`n`nCurrent OS: $currentOS (Build Number $($os.BuildNumber))" -ForegroundColor Cyan

Write-Host "`nExpected Version of srv.sys: $($expectedVersion.ToString())" -ForegroundColor Cyan

Write-Host "`nActual Version of srv.sys: $($fileVersion.ToString())" -ForegroundColor Cyan

If ($($fileVersion.CompareTo($expectedVersion)) -lt 0)

{

Write-Host "`n`n"

Write-Host "System is NOT Patched" -ForegroundColor Red

}

Else

{

Write-Host "`n`n"

Write-Host "System is Patched" -ForegroundColor Green

}

and

Output: ==============================================
Srv.sys does not exist, please verify vulnerability state manually.

The other thing I learned yesterday was that asset inventory can see the file and the version. Provided that the file exists in one of these two places in the registry

For WMI, software is polling information from two registry branches:

SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall
SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall

trilobite_rex

I also tried running this with an elevated rights account. just for clarification.