STIGQter STIGQter: STIG Summary: MS Exchange 2013 Edge Transport Server Security Technical Implementation Guide Version: 1 Release: 5 Benchmark Date: 26 Apr 2019:

Exchange Attachment filtering must remove undesirable attachments by file type.

DISA Rule

SV-84497r2_rule

Vulnerability Number

V-69875

Group Title

SRG-APP-000261

Rule Version

EX13-EG-000200

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Update the EDSP.

Open the Exchange Management Shell and enter the following command:

Add-AttachmentFilterEntry -Name <'*.FileExtension'> -Type FileName

Repeat the procedure for each undesirable attachment type.

Check Contents

Review the Email Domain Security Plan (EDSP).

Determine the list of undesirable attachment types that should be stripped.

Open the Exchange Management Shell and enter the following command:

Get-AttachmentFilterEntry

For each attachment type, if the values returned are different from the EDSP documented attachment types, this is a finding.

Vulnerability Number

V-69875

Documentable

False

Rule Version

EX13-EG-000200

Severity Override Guidance

Review the Email Domain Security Plan (EDSP).

Determine the list of undesirable attachment types that should be stripped.

Open the Exchange Management Shell and enter the following command:

Get-AttachmentFilterEntry

For each attachment type, if the values returned are different from the EDSP documented attachment types, this is a finding.

Check Content Reference

M

Target Key

3099

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