STIGQter STIGQter: STIG Summary: SLES 12 Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 23 Apr 2021:

The SUSE operating system SSH daemon public host key files must have mode 0644 or less permissive.

DISA Rule

SV-217275r646750_rule

Vulnerability Number

V-217275

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

SLES-12-030210

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Configure the SUSE operating system SSH daemon public host key files have mode "0644" or less permissive.

Note: SSH public key files may be found in other directories on the system depending on the installation.

Change the mode of public host key files under "/etc/ssh" to "0644" with the following command:

> sudo chmod 0644 /etc/ssh/ssh_host*key.pub

Check Contents

Verify the SUSE operating system SSH daemon public host key files have mode "0644" or less permissive.

Note: SSH public key files may be found in other directories on the system depending on the installation.

The following command will find all SSH public key files on the system:

> find /etc/ssh -name 'ssh_host*key.pub' -exec stat -c "%a %n" {} \;

644 /etc/ssh/ssh_host_rsa_key.pub
644 /etc/ssh/ssh_host_dsa_key.pub
644 /etc/ssh/ssh_host_ecdsa_key.pub
644 /etc/ssh/ssh_host_ed25519_key.pub

If any file has a mode more permissive than "0644", this is a finding.

Vulnerability Number

V-217275

Documentable

False

Rule Version

SLES-12-030210

Severity Override Guidance

Verify the SUSE operating system SSH daemon public host key files have mode "0644" or less permissive.

Note: SSH public key files may be found in other directories on the system depending on the installation.

The following command will find all SSH public key files on the system:

> find /etc/ssh -name 'ssh_host*key.pub' -exec stat -c "%a %n" {} \;

644 /etc/ssh/ssh_host_rsa_key.pub
644 /etc/ssh/ssh_host_dsa_key.pub
644 /etc/ssh/ssh_host_ecdsa_key.pub
644 /etc/ssh/ssh_host_ed25519_key.pub

If any file has a mode more permissive than "0644", this is a finding.

Check Content Reference

M

Target Key

4033

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