Microsoft Internet Explorer 11

Checking for signatures on downloaded programs must be enforced

STIG ID: DTBI370-IE11 | SRG: | Severity: Medium | CCI: CCI-001749 | Vulnerability ID: V-223079

Description

This policy setting allows you to manage whether Internet Explorer checks for digital signatures (which identifies the publisher of signed software and verifies it has not been modified or tampered with) on user computers before downloading executable programs. If you enable this policy setting, Internet Explorer will check the digital signatures of executable programs and display their identities before downloading them to the user computers. If you disable this policy setting, Internet Explorer will not check the digital signatures of executable programs or display their identities before downloading them to the user computers. If you do not configure this policy, Internet Explorer will not check the digital signatures of executable programs or display their identities before downloading them to the user computers.

Check

C-24752r428787_chk

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Advanced Page -> 'Check for signatures on downloaded programs' must be 'Enabled'. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Internet Explorer\Download Criteria: If the value "CheckExeSignatures" is REG_SZ = yes, this is not a finding.

Fix

F-24740r428788_fix

Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Advanced Page -> 'Check for signatures on downloaded programs' to 'Enabled'.