STIGQter: STIG Summary: Oracle Linux 7 Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 23 Apr 2021:

The Oracle Linux operating system must not have accounts configured with blank or null passwords.

DISA Rule

SV-221687r603260_rule

Vulnerability Number

V-221687

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

OL07-00-010290

Severity

CAT I

CCI(s)

• CCI-000366 - The organization implements the security configuration settings.

Weight

10

Fix Recommendation

If an account is configured for password authentication but does not have an assigned password, it may be possible to log on to the account without authenticating.

Remove any instances of the "nullok" option in "/etc/pam.d/system-auth" and "/etc/pam.d/password-auth" to prevent logons with empty passwords.

Note: Manual changes to the listed files may be overwritten by the "authconfig" program. The "authconfig" program should not be used to update the configurations listed in this requirement.

Check Contents

To verify that null passwords cannot be used, run the following command:

# grep nullok /etc/pam.d/system-auth /etc/pam.d/password-auth

If this produces any output, it may be possible to log on with accounts with empty passwords.

If null passwords can be used, this is a finding.

Vulnerability Number

V-221687

Documentable

False

Rule Version

OL07-00-010290

Severity Override Guidance

To verify that null passwords cannot be used, run the following command:

# grep nullok /etc/pam.d/system-auth /etc/pam.d/password-auth

If this produces any output, it may be possible to log on with accounts with empty passwords.

If null passwords can be used, this is a finding.

Check Content Reference

M

Target Key

4089

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