Qubes-VM-hardening/configure-sudo-prompt
2019-07-17 09:14:37 -04:00

56 lines
1.8 KiB
Bash

#!/bin/bash
# From https://github.com/tasket/Qubes-VM-hardening
set -e
[ `id -u` -eq 0 ] || exit
if [ ! -e /etc/sudoers.d/qubes ]; then
echo "The 'qubes-core-agent-passwordless-root' package does not appear"
echo "to be present. Sudo autoconfiguration is unnecessary."
exit 0
fi
if [ ! -e /etc/debian_version ]; then
echo "Debian-based template required for sudo autoconfiguration.
See qubes-os.org/doc/vm-sudo for manual instructions."
exit 1
fi
echo -e "\n--+ Enable yes/no authentication prompt for sudo +--
Warning: Before opting for this change a backup or clone
should me made of this template!"
read -p "Configure sudo authentication prompt now? (y/n): " answer
if [[ $answer == @(y|Y) ]]; then
mv --backup=numbered -fb /etc/pam.d/common-auth /etc/pam.d/common-auth.bak
cat >/etc/pam.d/common-auth <<_EOF
auth [success=1 default=ignore] pam_exec.so seteuid /usr/lib/qubes/qrexec-client-vm dom0 qubes.VMAuth /bin/grep -q ^1$
auth requisite pam_deny.so
auth required pam_permit.so
_EOF
# sed -i 's/^user ALL=(ALL) NOPASSWD: ALL/user ALL=(ALL) ALL/' /etc/sudoers.d/qubes
sed -i 's/^user/#user/' /etc/sudoers.d/qubes
echo 'user ALL=(ALL) ALL' >>/etc/sudoers.d/qubes
sed -ri 's/^(auth[[:space:]]sufficient[[:space:]]pam_permit.so)/#\1/' /etc/pam.d/su
mv -f /etc/polkit-1/rules.d/00-qubes-allow-all.rules \
/etc/polkit-1/rulesd_00-qubes-allow-all.rules.bak
mv -f /etc/polkit-1/localauthority/50-local.d/qubes-allow-all.pkla \
/etc/polkit-1/localauthority_50-locald_qubes-allow-all.pkla.bak
echo "Done."
echo '
Next.... Enable auth prompts in dom0 with the following commands:
[user@dom0 ~]$ sudo su -
[root@dom0 /]# echo "/usr/bin/echo 1" >/etc/qubes-rpc/qubes.VMAuth
[root@dom0 /]# echo "\$anyvm dom0 ask,default_target=dom0" \
>/etc/qubes-rpc/policy/qubes.VMAuth
'
fi