v2.0.0-rc2

* Add ipset to network and console
* Add fdisk to console
* Use Docker 24.0.7 by default
* SSH security hardenings

Dockerfile.dapper

@@ -81,14 +81,14 @@ ARG OS_FIRMWARE=true
 ARG OS_BASE_URL_amd64=https://github.com/burmilla/os-base/releases/download/v2023.05-1/os-base_amd64.tar.xz
 ARG OS_BASE_URL_arm64=https://github.com/burmilla/os-base/releases/download/v2023.05-1/os-base_arm64.tar.xz
 
-ARG OS_INITRD_BASE_URL_amd64=https://github.com/burmilla/os-initrd-base/releases/download/v2023.05-1/os-initrd-base-amd64.tar.gz
-ARG OS_INITRD_BASE_URL_arm64=https://github.com/burmilla/os-initrd-base/releases/download/v2023.05-1/os-initrd-base-arm64.tar.gz
+ARG OS_INITRD_BASE_URL_amd64=https://github.com/burmilla/os-initrd-base/releases/download/v2023.05-2/os-initrd-base-amd64.tar.gz
+ARG OS_INITRD_BASE_URL_arm64=https://github.com/burmilla/os-initrd-base/releases/download/v2023.05-2/os-initrd-base-arm64.tar.gz
 
 ARG SYSTEM_DOCKER_VERSION=17.06.109
 ARG SYSTEM_DOCKER_URL_amd64=https://github.com/burmilla/os-system-docker/releases/download/${SYSTEM_DOCKER_VERSION}/docker-amd64-${SYSTEM_DOCKER_VERSION}.tgz
 ARG SYSTEM_DOCKER_URL_arm64=https://github.com/burmilla/os-system-docker/releases/download/${SYSTEM_DOCKER_VERSION}/docker-arm64-${SYSTEM_DOCKER_VERSION}.tgz
 
-ARG USER_DOCKER_VERSION=24.0.5
+ARG USER_DOCKER_VERSION=24.0.7
 ARG USER_DOCKER_ENGINE_VERSION=docker-${USER_DOCKER_VERSION}
 
 ARG AZURE_SERVICE=false

cmd/control/console_init.go

@@ -407,7 +407,7 @@ func modifySshdConfig(cfg *config.CloudConfig) error {
 }
 
 func setupSSH(cfg *config.CloudConfig) error {
-	for _, keyType := range []string{"rsa", "dsa", "ecdsa", "ed25519"} {
+	for _, keyType := range []string{"rsa", "ed25519"} {
 		outputFile := fmt.Sprintf("/etc/ssh/ssh_host_%s_key", keyType)
 		outputFilePub := fmt.Sprintf("/etc/ssh/ssh_host_%s_key.pub", keyType)
 

images/02-console/Dockerfile

@@ -4,7 +4,7 @@ COPY build/sshd_config.append.tpl /etc/ssh/
 COPY build/lsb-release /etc/
 
 RUN apt-get update \
-    && apt-get install -y --no-install-recommends iptables openssh-server rsync locales \
+    && apt-get install -y --no-install-recommends fdisk ipset iptables openssh-server rsync locales \
                            sudo less curl ca-certificates psmisc htop kmod iproute2 \
                            net-tools bash-completion wget \
                            nano open-iscsi iputils-ping nvi \

images/02-console/sshd_config.append.tpl

@@ -21,3 +21,10 @@ IgnoreRhosts yes
 HostbasedAuthentication no
 PermitEmptyPasswords no
 AllowTcpForwarding no
+DebianBanner no
+
+# Restrict key exchange, cipher, and MAC algorithms, as per sshaudit.com hardening guide.
+KexAlgorithms curve25519-sha256,[email protected],diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256
+Ciphers [email protected],[email protected],[email protected],aes256-ctr,aes192-ctr,aes128-ctr
+MACs [email protected],[email protected],[email protected]
+HostKeyAlgorithms ssh-ed25519,[email protected],[email protected],[email protected],rsa-sha2-256,rsa-sha2-512,[email protected],[email protected]

os-config.tpl.yml

@@ -289,6 +289,7 @@ rancher:
       - system-volumes
       - command-volumes
       volumes:
+      - /usr/bin/ipset:/sbin/ipset:ro
       - /usr/bin/iptables:/sbin/iptables:ro
     ntp:
       image: {{.OS_REPO}}/os-base:{{.VERSION}}{{.SUFFIX}}