STIGQter: STIG Summary: Mozilla Firefox Security Technical Implementation Guide Version: 5 Release: 1 Benchmark Date: 22 Jan 2021:

FireFox is configured to ask which certificate to present to a web site when a certificate is required.

DISA Rule

SV-223153r612236_rule

Vulnerability Number

V-223153

Group Title

SRG-APP-000177

Rule Version

DTBF050

Severity

CAT II

CCI(s)

• CCI-000187 - The information system, for PKI-based authentication, maps the authenticated identity to the account of the individual or group.

Weight

10

Fix Recommendation

Set the value of "security.default_personal_cert" to "Ask Every Time". Use the Mozilla.cfg file to lock the preference so users cannot change it.

Check Contents

Type "about:config" in the browser address bar. Verify Preference Name "security.default_personal_cert" is set to "Ask Every Time" and is locked to prevent the user from altering.

Criteria: If the value of "security.default_personal_cert" is set incorrectly or is not locked, then this is a finding.

Vulnerability Number

V-223153

Documentable

False

Rule Version

DTBF050

Severity Override Guidance

Type "about:config" in the browser address bar. Verify Preference Name "security.default_personal_cert" is set to "Ask Every Time" and is locked to prevent the user from altering.

Criteria: If the value of "security.default_personal_cert" is set incorrectly or is not locked, then this is a finding.

Check Content Reference

M

Target Key

4097

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