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Showing SKILL.md
macOS post-exploitation for credential harvesting, DTrace monitoring, TCC bypass, and stealth operations via native tools
Windows userland post-exploitation for credential harvesting, monitoring, AMSI/ETW bypass, and stealth operations
Kubernetes post-exploitation for container escape, secret extraction, RBAC abuse, and cluster persistence
| name | cis-ubuntu1604-v200-5-3-10 |
| description | Ensure SSH HostbasedAuthentication is disabled |
| category | cis-networking |
| version | 2.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-16.04","ssh","remote-access"] |
| cis_id | 5.3.10 |
| cis_benchmark | CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
The HostbasedAuthentication parameter specifies if authentication is allowed through trusted hosts via the user of .rhosts, or /etc/hosts.equiv, along with successful public key client host authentication. This option only applies to SSH Protocol Version 2.
Even though the .rhosts files are ineffective if support is disabled in /etc/pam.conf, disabling the ability to use .rhosts files in SSH provides an additional layer of protection.
Run the following command and verify that output matches:
sshd -T -C user=root -C host="$(hostname)" -C addr="$(grep $(hostname) /etc/hosts | awk '{print $1}')" | grep hostbasedauthentication
hostbasedauthentication no
Run the following command and verify the output matches:
grep -Ei '^\s*HostbasedAuthentication\s+yes' /etc/ssh/sshd_config
Nothing should be returned.
Edit the /etc/ssh/sshd_config file to set the parameter as follows:
HostbasedAuthentication no
HostbasedAuthentication no
Version 7
16.3 Require Multi-factor Authentication - Require multi-factor authentication for all user accounts, on all systems, whether managed onsite or by a third-party provider.
Automated