Microsoft Windows Server 2019
Windows Server 2019 must be configured to prevent the storage of the LAN Manager hash of passwords
STIG ID:
WN19-SO-000300
|
SRG:
SRG-OS-000073-GPOS-00041
|
Severity:
High
|
CCI:
CCI-004062,CCI-000196
|
Vulnerability ID:
V-205654
Description
The LAN Manager hash uses a weak encryption algorithm and there are several tools available that use this hash to retrieve account passwords. This setting controls whether a LAN Manager hash of the password is stored in the SAM the next time the password is changed.
Check
C-5919r354880_chk
If the following registry value does not exist or is not configured as specified, this is a finding:Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\Value Name: NoLMHashValue Type: REG_DWORDValue: 0x00000001 (1)
Fix
F-5919r354881_fix
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Do not store LAN Manager hash value on next password change" to "Enabled".