STIGQter: STIG Summary: Microsoft Exchange 2013 Mailbox Server Security Technical Implementation Guide Version: 2 Release: 1 Benchmark Date: 22 Jan 2021:

The Exchange Receive connector timeout must be limited.

DISA Rule

SV-207321r615936_rule

Vulnerability Number

V-207321

Group Title

SRG-APP-000295

Rule Version

EX13-MB-000275

Severity

CAT III

CCI(s)

• CCI-002361 - The information system automatically terminates a user session after organization-defined conditions or trigger events requiring session disconnect.

Weight

10

Fix Recommendation

Update the EDSP.

Open the Exchange Management Shell and enter the following command:

Set-ReceiveConnector -Identity <'IdentityName'> -ConnectionTimeout 00:10:00

Note: The <IdentityName> value must be in quotes.

or

The value as identified by the EDSP that has obtained a signoff with risk acceptance.

Check Contents

Review the Email Domain Security Plan (EDSP).

Determine the Connection Timeout value.

Open the Exchange Management Shell and enter the following command:

Get-ReceiveConnector | Select Name, Identity, ConnectionTimeout

For each Receive connector, if the value of ConnectionTimeout is not set to 00:10:00, this is a finding.

or

If ConnectionTimeout is set to other than 00:10:00 and has signoff and risk acceptance in the EDSP, this is not a finding.

Vulnerability Number

V-207321

Documentable

False

Rule Version

EX13-MB-000275

Severity Override Guidance

Review the Email Domain Security Plan (EDSP).

Determine the Connection Timeout value.

Open the Exchange Management Shell and enter the following command:

Get-ReceiveConnector | Select Name, Identity, ConnectionTimeout

For each Receive connector, if the value of ConnectionTimeout is not set to 00:10:00, this is a finding.

or

If ConnectionTimeout is set to other than 00:10:00 and has signoff and risk acceptance in the EDSP, this is not a finding.

Check Content Reference

M

Target Key

2923

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