Ensure sshd MACs are configured

Como é verificado

Método de auditoria: Comando shell

alt0() { o=$(bash -c 'sshd -T | grep -Pi -- '"'"'macs\h+([^#\n\r]+,)?(hmac-md5|hmac-md5-96|hmac-sha1- 96|umac-64@openssh.com|hmac-md5-etm@openssh.com|hmac-md5-96- etm@openssh\.com|hmac-sha1-etm@openssh\.com|hmac-sha1-96- etm@openssh\.com|umac-64-etm@openssh\.com|umac-128-etm@openssh\.com)\b'"'"'' 2>/dev/null); [ -z "$o" ] || { echo "step1: $o" | head -c 300; return 1; }; }; if alt0; then echo compliant; fi

Saída esperada

compliant

Como é corrigido

Método de correção: Orientação ou patch de infraestrutura

Note: • First occurrence of an option takes precedence. • Though MACs may be configured through the MACs option in the /etc/ssh/sshd_config file, it is recommended that the MACs available to openSSH server are configured through system-wide-crypto-policy • If the recommendations in the subsection "Configure system wide crypto policy" have been followed, this Audit should be in a passing state. Please review that section before following this Remediation Procedure • By default, system-wide-crypto-policy is applied to the openSSH server. If the following defaults don't exist due to modifications or upgrade from a earlier release, the system-wide-crypto-policy may not be included by the openSSH…

Verificar este host

Execute isto em uma máquina que você tenha permissão para auditar. A varredura é somente leitura.

tmaegis scan --target linux