STIGQter: STIG Summary: Canonical Ubuntu 24.04 LTS Security Technical Implementation Guide Version: 1 Release: 6 Benchmark Date: 01 Jul 2026:

Ubuntu 24.04 LTS must implement smart card logins for multifactor authentication for local and network access to privileged and nonprivileged accounts over SSH.

DISA Rule

SV-270722r1067130_rule

Vulnerability Number

V-270722

Group Title

SRG-OS-000105-GPOS-00052

Rule Version

UBTU-24-400030

Severity

CAT II

CCI(s)

• CCI-000765 - Implement multifactor authentication for network access to privileged accounts.
• CCI-000766 - Implement multifactor authentication for network access to non-privileged accounts.

Weight

10

Fix Recommendation

Configure Ubuntu 24.04 LTS to use multifactor authentication for access to accounts.

Set the sshd option "PubkeyAuthentication" to "yes" in the "/etc/ssh/sshd_config" file.

PubkeyAuthentication yes

Check Contents

Verify the sshd daemon allows public key authentication with the following command:

$ sudo grep -r ^PubkeyAuthentication /etc/ssh/sshd_config*
/etc/ssh/sshd_config:PubkeyAuthentication yes

If "PubkeyAuthentication" is not set to "yes", is commented out, is missing, or conflicting results are returned, this is a finding.

Vulnerability Number

V-270722

Documentable

False

Rule Version

UBTU-24-400030

Severity Override Guidance

Verify the sshd daemon allows public key authentication with the following command:

$ sudo grep -r ^PubkeyAuthentication /etc/ssh/sshd_config*
/etc/ssh/sshd_config:PubkeyAuthentication yes

If "PubkeyAuthentication" is not set to "yes", is commented out, is missing, or conflicting results are returned, this is a finding.

Check Content Reference

M

Target Key

5673