STIGQter: STIG Summary: Microsoft Excel 2010 Version: 1 Release: 11 Benchmark Date: 27 Apr 2018:

Blocking as default file block opening behavior must be enforced.

DISA Rule

SV-33872r1_rule

Vulnerability Number

V-26612

Group Title

DTOO110 - Set default file block behavior

Rule Version

DTOO110 - Excel

Severity

CAT II

CCI(s)

• CCI-001662 - The information system takes organization-defined corrective action when organization-defined unacceptable mobile code is identified.

Weight

10

Fix Recommendation

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2010 -> Excel Options -> Security -> Trust Center -> File Block Settings “Set default file block behavior” to “Enabled: Blocked files are not opened".

Check Contents

The policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2010 -> Excel Options -> Security -> Trust Center -> File Block Settings “Set default file block behavior” must be “Enabled: Blocked files are not opened".

Procedure: Use the Windows Registry Editor to navigate to the following key:

HKCU\Software\Policies\Microsoft\Office\14.0\excel\security\fileblock

Criteria: If the value OpenInProtectedView is REG_DWORD = 0, this is not a finding.

Vulnerability Number

V-26612

Documentable

False

Rule Version

DTOO110 - Excel

Severity Override Guidance

The policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2010 -> Excel Options -> Security -> Trust Center -> File Block Settings “Set default file block behavior” must be “Enabled: Blocked files are not opened".

Procedure: Use the Windows Registry Editor to navigate to the following key:

HKCU\Software\Policies\Microsoft\Office\14.0\excel\security\fileblock

Criteria: If the value OpenInProtectedView is REG_DWORD = 0, this is not a finding.

Check Content Reference

M

Responsibility

Information Assurance Officer

Target Key

2021

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