STIGQter: STIG Summary: Microsoft Exchange 2016 Mailbox Server Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 23 Apr 2021:

Exchange must have Forms-based Authentication enabled.

DISA Rule

SV-228417r612748_rule

Vulnerability Number

V-228417

Group Title

SRG-APP-000014

Rule Version

EX16-MB-002920

Severity

CAT II

CCI(s)

• CCI-000068 - The information system implements cryptographic mechanisms to protect the confidentiality of remote access sessions.

Weight

10

Fix Recommendation

Open the Exchange Management Shell and enter the following command:

Set-OwaVirtualDirectory -Identity <'IdentityName'> -FormsAuthentication $false

Note: <IdentityName> must be in single quotes.

Example for the Identity Name: <ServerName>\owa (Default website)

Restart the ISS service.

Check Contents

Open the Exchange Management Shell and enter the following command:

Get-OwaVirtualDirectory | Select ServerName, Name, Identity, FormsAuthentication

If the value of "FormsAuthentication" is not set to "False", this is a finding.

Vulnerability Number

V-228417

Documentable

False

Rule Version

EX16-MB-002920

Severity Override Guidance

Open the Exchange Management Shell and enter the following command:

Get-OwaVirtualDirectory | Select ServerName, Name, Identity, FormsAuthentication

If the value of "FormsAuthentication" is not set to "False", this is a finding.

Check Content Reference

M

Target Key

4223

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