The ESXi host must enforce password complexity by configuring a password quality policy.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-258734	SRG-OS-000069-VMM-000360	ESXI-80-000035	SV-258734r933263_rule	2023-10-11	1

Description
To enforce the use of complex passwords, minimum numbers of characters of different classes are mandated. The use of complex passwords reduces the ability of attackers to successfully obtain valid passwords using guessing or exhaustive search techniques. Complexity requirements increase the password search space by requiring users to construct passwords from a larger character set than they may otherwise use. Satisfies: SRG-OS-000069-VMM-000360, SRG-OS-000070-VMM-000370, SRG-OS-000071-VMM-000380, SRG-OS-000072-VMM-000390, SRG-OS-000072-VMM-000390, SRG-OS-000078-VMM-000450, SRG-OS-000266-VMM-000940

Description

To enforce the use of complex passwords, minimum numbers of characters of different classes are mandated. The use of complex passwords reduces the ability of attackers to successfully obtain valid passwords using guessing or exhaustive search techniques. Complexity requirements increase the password search space by requiring users to construct passwords from a larger character set than they may otherwise use. Satisfies: SRG-OS-000069-VMM-000360, SRG-OS-000070-VMM-000370, SRG-OS-000071-VMM-000380, SRG-OS-000072-VMM-000390, SRG-OS-000072-VMM-000390, SRG-OS-000078-VMM-000450, SRG-OS-000266-VMM-000940

ℹ️ Check
From the vSphere Client, go to Hosts and Clusters. Select the ESXi Host >> Configure >> System >> Advanced System Settings. Select the "Security.PasswordQualityControl" value and verify it is set to "similar=deny retry=3 min=disabled,disabled,disabled,disabled,15". or From a PowerCLI command prompt while connected to the ESXi host, run the following command: Get-VMHost \| Get-AdvancedSetting -Name Security.PasswordQualityControl If the "Security.PasswordQualityControl" setting is set to a value other than "similar=deny retry=3 min=disabled,disabled,disabled,disabled,15", this is a finding.

ℹ️ Check

From the vSphere Client, go to Hosts and Clusters. Select the ESXi Host >> Configure >> System >> Advanced System Settings. Select the "Security.PasswordQualityControl" value and verify it is set to "similar=deny retry=3 min=disabled,disabled,disabled,disabled,15". or From a PowerCLI command prompt while connected to the ESXi host, run the following command: Get-VMHost | Get-AdvancedSetting -Name Security.PasswordQualityControl If the "Security.PasswordQualityControl" setting is set to a value other than "similar=deny retry=3 min=disabled,disabled,disabled,disabled,15", this is a finding.

✔️ Fix
From the vSphere Client, go to Hosts and Clusters. Select the ESXi Host >> Configure >> System >> Advanced System Settings. Click "Edit". Select the "Security.PasswordQualityControl" value and configure it to "similar=deny retry=3 min=disabled,disabled,disabled,disabled,15". or From a PowerCLI command prompt while connected to the ESXi host, run the following command: Get-VMHost \| Get-AdvancedSetting -Name Security.PasswordQualityControl \| Set-AdvancedSetting -Value "similar=deny retry=3 min=disabled,disabled,disabled,disabled,15"

✔️ Fix

From the vSphere Client, go to Hosts and Clusters. Select the ESXi Host >> Configure >> System >> Advanced System Settings. Click "Edit". Select the "Security.PasswordQualityControl" value and configure it to "similar=deny retry=3 min=disabled,disabled,disabled,disabled,15". or From a PowerCLI command prompt while connected to the ESXi host, run the following command: Get-VMHost | Get-AdvancedSetting -Name Security.PasswordQualityControl | Set-AdvancedSetting -Value "similar=deny retry=3 min=disabled,disabled,disabled,disabled,15"