Ensure sshd Ciphers are configured

alt0() { o=$(bash -c '#!/usr/bin/env bash
{
   a_weak=(3des-cbc blowfish-cbc cast128-cbc aes128-cbc aes192-cbc aes256-cbc arcfour arcfour128 arcfour256 rijndael-cbc@lysator.liu.se)
   l_offered="$(sshd -T | awk '"'"'$1=="ciphers"{print $2}'"'"' | tr '"'"','"'"' '"'"'\n'"'"')"
   for l_alg in "${a_weak[@]}"; do
      grep -Fxq -- "$l_alg" <<< "$l_offered" && printf '"'"'%s\n'"'"' "$l_alg"
   done
}' 2>&1); [ -z "$o" ] || { echo "step1: $o" | head -c 300; return 1; }; o=$(bash -c 'sshd -T 2>&1 | awk '"'"'($1=="ciphers" && $2~/chacha20- poly1305@openssh\.com/){print}'"'"'' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'On OpenSSH 9.6 and later the Terrapin attack (CVE-2023-48795) is mitigated by' || { echo step2: missing 'On OpenSSH 9.6 and later the Terrapin attack (CVE-2023-48795'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'default through strict key exchange, so a returned line does not by itself indicate a' || { echo step2: missing 'default through strict key exchange, so a returned line does'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'weakness. On earlier OpenSSH releases, if a line is returned, review CVE-2023-48795' || { echo step2: missing 'weakness. On earlier OpenSSH releases, if a line is returned'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'and verify the system has been patched, and consider excluding chacha20-poly1305' || { echo step2: missing 'and verify the system has been patched, and consider excludi'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'through the system-wide crypto policy.' || { echo step2: missing 'through the system-wide crypto policy.'; return 1; }; }; if alt0; then echo compliant; fi

tmaegis scan --target linux