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 is configured to only use the SSHv2 protocol.

DISA Rule

SV-221856r603260_rule

Vulnerability Number

V-221856

Group Title

SRG-OS-000074-GPOS-00042

Rule Version

OL07-00-040390

Severity

CAT I

CCI(s)

• CCI-000197 - The information system, for password-based authentication, transmits only cryptographically-protected passwords.

Weight

10

Fix Recommendation

Remove all Protocol lines that reference version "1" in "/etc/ssh/sshd_config" (this file may be named differently or be in a different location if using a version of SSH that is provided by a third-party vendor). The "Protocol" line must be as follows:

Protocol 2

The SSH service must be restarted for changes to take effect.

Check Contents

Check the version of the operating system with the following command:

# cat /etc/oracle-release

If the release is 7.4 or newer this requirement is Not Applicable.

Verify the SSH daemon is configured to only use the SSHv2 protocol.

Check that the SSH daemon is configured to only use the SSHv2 protocol with the following command:

# grep -i protocol /etc/ssh/sshd_config
Protocol 2
#Protocol 1,2

If any protocol line other than "Protocol 2" is uncommented, this is a finding.

Vulnerability Number

V-221856

Documentable

False

Rule Version

OL07-00-040390

Severity Override Guidance

Check the version of the operating system with the following command:

# cat /etc/oracle-release

If the release is 7.4 or newer this requirement is Not Applicable.

Verify the SSH daemon is configured to only use the SSHv2 protocol.

Check that the SSH daemon is configured to only use the SSHv2 protocol with the following command:

# grep -i protocol /etc/ssh/sshd_config
Protocol 2
#Protocol 1,2

If any protocol line other than "Protocol 2" is uncommented, this is a finding.

Check Content Reference

M

Target Key

4089

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