STIGQter: STIG Summary: Oracle Linux 6 Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 23 Apr 2021:

The SSH daemon must not allow authentication using an empty password.

DISA Rule

SV-208926r603263_rule

Vulnerability Number

V-208926

Group Title

SRG-OS-000106

Rule Version

OL6-00-000239

Severity

CAT I

CCI(s)

• CCI-000766 - The information system implements multifactor authentication for network access to non-privileged accounts.

Weight

10

Fix Recommendation

To explicitly disallow remote login from accounts with empty passwords, add or correct the following line in "/etc/ssh/sshd_config":

PermitEmptyPasswords no

Any accounts with empty passwords should be disabled immediately, and PAM configuration should prevent users from being able to assign themselves empty passwords.

Check Contents

To determine how the SSH daemon's "PermitEmptyPasswords" option is set, run the following command:

# grep -i PermitEmptyPasswords /etc/ssh/sshd_config

If no line, a commented line, or a line indicating the value "no" is returned, then the required value is set.
If the required value is not set, this is a finding.

Vulnerability Number

V-208926

Documentable

False

Rule Version

OL6-00-000239

Severity Override Guidance

To determine how the SSH daemon's "PermitEmptyPasswords" option is set, run the following command:

# grep -i PermitEmptyPasswords /etc/ssh/sshd_config

If no line, a commented line, or a line indicating the value "no" is returned, then the required value is set.
If the required value is not set, this is a finding.

Check Content Reference

M

Target Key

2928

Comments