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 be configured so that the SSH daemon does not allow authentication using rhosts authentication.

DISA Rule

SV-221852r603260_rule

Vulnerability Number

V-221852

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

OL07-00-040350

Severity

CAT II

CCI(s)

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

Weight

10

Fix Recommendation

Configure the SSH daemon to not allow authentication using known hosts authentication.

Add the following line in "/etc/ssh/sshd_config", or uncomment the line and set the value to "yes":

IgnoreRhosts yes

Check Contents

Verify the SSH daemon does not allow authentication using known hosts authentication.

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

# grep -i IgnoreRhosts /etc/ssh/sshd_config

IgnoreRhosts yes

If the value is returned as "no", the returned line is commented out, or no output is returned, this is a finding.

Vulnerability Number

V-221852

Documentable

False

Rule Version

OL07-00-040350

Severity Override Guidance

Verify the SSH daemon does not allow authentication using known hosts authentication.

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

# grep -i IgnoreRhosts /etc/ssh/sshd_config

IgnoreRhosts yes

If the value is returned as "no", the returned line is commented out, or no output is returned, this is a finding.

Check Content Reference

M

Target Key

4089

Comments