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@@ -3,3 +3,5 @@ FROM outofcoffee/imposter:4.1.2 | |
| COPY ./docker/mock-pay /opt/imposter/config/ | ||
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| USER imposter | ||
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| EXPOSE 8080 | ||
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| @@ -0,0 +1,98 @@ | ||
| #!/bin/sh | ||
| echo "=== Starting Alpine Hardening Script ===" | ||
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| echo "add default user" | ||
| adduser -D -s /bin/sh -u 1000 user && \ | ||
| sed -i -r 's/^user:!:/user:x:/' /etc/shadow && \ | ||
| chmod u-s /usr/sbin/login_duo | ||
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| echo "/etc/duo/login_duo.conf must be readable only by user 'user'." | ||
| chown user:user /etc/duo/login_duo.conf && \ | ||
| chmod 0400 /etc/duo/login_duo.conf | ||
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| echo "Ensure strict ownership and perms." | ||
| chown root:root /usr/bin/github_pubkeys && \ | ||
| chmod 0555 /usr/bin/github_pubkeys && \ | ||
| echo -e "\n\nApp container image built on $(date)." > /etc/motd | ||
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| echo "Remove world-writeable permissions except for /tmp/" | ||
| find / -xdev -type d -perm +0002 -exec chmod o-w {} + \ | ||
| && find / -xdev -type f -perm +0002 -exec chmod o-w {} + \ | ||
| && chmod 777 /tmp/ \ | ||
| && chown www-data:root /tmp/ | ||
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| echo "Remove unnecessary user accounts." | ||
| sed -i -r '/^(user|root|sshd|www-data|nobody)/!d' /etc/group | ||
| sed -i -r '/^(user|root|sshd|www-data|nobody)/!d' /etc/passwd | ||
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| echo "Remove existing crontabs, if any." | ||
| rm -fr /var/spool/cron \ | ||
| && rm -fr /etc/crontabs \ | ||
| && rm -fr /etc/periodic | ||
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| echo "Remove interactive login shell for everybody but user." | ||
| sed -i -r '/^user:/! s#^(.*):[^:]*$#\1:/sbin/nologin#' /etc/passwd | ||
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| sysdirs=" | ||
| /bin | ||
| /etc | ||
| /lib | ||
| /sbin | ||
| /usr | ||
| " | ||
| echo "Remove apk configs." | ||
| find $sysdirs -xdev -regex '.*apk.*' -exec rm -fr {} + | ||
| find $sysdirs -xdev -type f -regex '.*-$' -exec rm -f {} + | ||
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| echo "Ensure system dirs are owned by root and not writable by anybody else." | ||
| find $sysdirs -xdev -type d \ | ||
| -exec chown root:root {} \; \ | ||
| -exec chmod 0755 {} \; | ||
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| echo "Remove all suid files." | ||
| find $sysdirs -xdev -type f -a -perm +4000 -delete | ||
| find $sysdirs -xdev -type f -a \( -perm +4000 -o -perm +2000 \) -delete | ||
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| echo "Remove other programs that could be dangerous." | ||
| find $sysdirs -xdev \( \ | ||
| -name hexdump -o \ | ||
| -name chgrp -o \ | ||
| -name chmod -o \ | ||
| -name chown -o \ | ||
| -name ln -o \ | ||
| -name od -o \ | ||
| -name strings -o \ | ||
| -name su \ | ||
| -name sudo \ | ||
| \) -delete | ||
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| echo "Remove init scripts since we do not use them." | ||
| rm -fr /etc/init.d | ||
| rm -fr /lib/rc | ||
| rm -fr /etc/conf.d | ||
| rm -fr /etc/inittab | ||
| rm -fr /etc/runlevels | ||
| rm -fr /etc/rc.conf | ||
| rm -fr /etc/logrotate.d | ||
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| echo "Remove kernel tunables since we do not need them." | ||
| rm -fr /etc/sysctl* | ||
| rm -fr /etc/modprobe.d | ||
| rm -fr /etc/modules | ||
| rm -fr /etc/mdev.conf | ||
| rm -fr /etc/acpi | ||
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| echo "Remove root homedir since we do not need it." | ||
| rm -fr /root | ||
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| echo "Remove fstab since we do not need it." | ||
| rm -f /etc/fstab | ||
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| echo "Remove all but a handful of admin commands." | ||
| find /sbin /usr/sbin ! -type d -a ! -name apk -a ! -name ln -delete | ||
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| echo "Remove broken symlinks (because we removed the targets above)." | ||
| find $sysdirs -xdev -type l -exec test ! -e {} \; -delete | ||
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| echo "Disable password login for everybody" | ||
| while IFS=: read -r username _; do passwd -l "$username"; done < /etc/passwd || true |
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