STIGQter: STIG Summary: Red Hat Enterprise Linux 6 Security Technical Implementation Guide Version: 1 Release: 24 Benchmark Date: 25 Oct 2019: The SSH daemon must not allow host-based authentication.

DISA Rule

SV-50413r1_rule

Vulnerability Number

V-38612

Group Title

SRG-OS-000106

Rule Version

RHEL-06-000236

Severity

CAT II

CCI(s)

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

Weight

10

Fix Recommendation

SSH's cryptographic host-based authentication is more secure than ".rhosts" authentication, since hosts are cryptographically authenticated. However, it is not recommended that hosts unilaterally trust one another, even within an organization.

To disable host-based authentication, add or correct the following line in "/etc/ssh/sshd_config":

HostbasedAuthentication no

Check Contents

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

# grep -i HostbasedAuthentication /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-38612

Documentable

False

Rule Version

RHEL-06-000236

Severity Override Guidance

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

# grep -i HostbasedAuthentication /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

2367

Comments