About Domain Controller November 2022 Patch LSASS Memory Leak

As you know, Microsoft had released a possible memory leak in the “Local Security Authority Subsystem Service (LSASS.exe)” in various Windows Server versions as of November 2022 and confirming the memory leak in “Local Security Authority Subsystem Service (LSASS.exe)“.


The update information is as follows;

  • Windows Server 2019: Update KB5019966
  • Windows Server 2016: Update KB5019964
  • Windows Server 2012 R2: Update KB5020023, Update KB5020010
  • Windows Server 2012: Update KB5020009, Update KB5020003
  • Windows Server 2008 R2 SP1: Update KB5020000, Update KB5020013
  • Windows Server 2008 SP2: OOB-Update KB5021657

The problem can be mitigated with a workaround but issue was resolved in KB5021235.

If you used the above workaround, please see KB5020805:
How to manage Kerberos protocol changes related to CVE-2022-37967 for further information on how to configure KrbtgtFullPacSignature.

Possible memory leak in Local Security Authority Subsystem Service (LSASS.exe) for Windows Server 2016

Possible memory leak in Local Security Authority Subsystem Service (LSASS.exe) for Windows Server 2019


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How to Get Domain Controller Information with Powershell

You can use the script below to discover your Domain Controller servers in your system.

(Get-ADForest).Domains | % { Get-ADDomainController -Discover -DomainName $_ } | % { Get-ADDomainController -server $_.Name -filter * }

ComputerObjectDN : Domain Controller Object Distinguished Name
DefaultPartition : Domain Partition
Domain : Domain Name
Enabled : Domain Status
Forest : Active Directory Forest Name
HostName : Domain Controller Host Name
InvocationId : The invocation ID identifies the version or the instantiation of the Active Directory database that is running on a given domain controller.
IPv4Address : Domain Controller IPv4 Address
IPv6Address : Domain Controller IPv6 Address
IsGlobalCatalog : Active Directory Global Catalog Status
IsReadOnly : Read-Only Domain Controllers Status
LdapPort : Domain Controller Ldap Port Number
Name : Domain Controller Computer Name
NTDSSettingsObjectDN : NTDS Settings Object Distinguished Name
OperatingSystem : Domain Controller Operation System
OperatingSystemHotfix : Domain Controller Operation Hotfix
OperatingSystemServicePack : Domain Controller Operation System Service Pack
OperatingSystemVersion : Domain Controller Operation System Version Build Number
OperationMasterRoles : Active Directory Flexible Single Master Operation (FSMO) Roles
Partitions : Domain Controller Partitions
ServerObjectDN : Server Object Distinguished Name
ServerObjectGuid : Server Object GUID Vaule
Site : Active Directory Site Name
SslPort : Domain Controller Ssl Port Number

You can customize the above criteria according to your needs and list them using the select command.

Example shell :

(Get-ADForest).Domains | % { Get-ADDomainController -Discover -DomainName $_ } | % { Get-ADDomainController -server $_.Name -filter * } | Select Name, Domain, Forest, IPv4Address, Site ,OperatingSystem, Operating
SystemVersion, OperationMasterRoles,IsGlobalCatalog | ft ( or Out-GridView)

Have a nice day!