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Merge pull request #1551 from holta/ssh-pwd-warnings
Fix iiab-admin published password warnings for Raspbian Desktop 2018-11-13 especially
This commit is contained in:
A Holt
GitHub
commit
340b3b6df2
5 changed files with 44 additions and 36 deletions
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@ -3,19 +3,22 @@
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# Set iiab_admin_user_install: False if you don't want iiab_admin_user & wheel
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# group auto-created in roles/iiab-admin/tasks/main.yml (hence disabling sudo-
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# checks/warnings of published passwds like pi/raspberry & iiab-admin/g0adm1n).
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iiab_admin_user_install: True
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# iiab_admin_user_install: True
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# If iiab_admin_user_install: False, set iiab_admin_user (below) to an existing
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# Linux user that has sudo access, for login to Admin Console http://box/admin
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# ODDLY THIS IS ALSO USED BY roles/usb-lib/tasks/main.yml TO SET GROUP PERM FOR /library/www/html/local_content (ISN'T {{ apache_user }} MORE APPROPRIATE?)
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iiab_admin_user: iiab-admin
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# iiab_admin_user: iiab-admin
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# For live checks/alerts of published pwds
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iiab_admin_published_pwd: g0adm1n
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# iiab_admin_published_pwd: g0adm1n
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# Password hash to override above, if Ansible creates above user:
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iiab_admin_pwd_hash: $6$xsce51$D.IrrEeLBYIuJkGDmi27pZUGOwPFp98qpl3hxMwWV4hXigFGmdSvy3s/j7tn6OnyTTLmlV7SsN0lCUAFzxSop.
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# iiab_admin_pwd_hash: $6$xsce51$D.IrrEeLBYIuJkGDmi27pZUGOwPFp98qpl3hxMwWV4hXigFGmdSvy3s/j7tn6OnyTTLmlV7SsN0lCUAFzxSop.
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# Obtain a password hash - NEW MORE SECURE WAY:
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# python3 -c 'import crypt; print(crypt.crypt("<plaintext>", crypt.mksalt(crypt.METHOD_SHA512)))'
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# Obtain a password hash - OLD WAY:
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# python -c 'import crypt; print crypt.crypt("<plaintext>", "$6$<salt>")'
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# All above are set in: github.com/iiab/iiab/blob/master/vars/default_vars.yml
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# If nec, change them by editing /etc/iiab/local_vars.yml prior to installing!
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@ -21,24 +21,32 @@
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- option: iiab_admin_user
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value: "{{ iiab_admin_user }}"
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- name: Install /etc/profile.d/profile_ssh_warn.sh from template, to issue warnings (during shell/ssh logins) if iiab-admin password is still default
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- name: Install /etc/profile.d/sshpwd-profile-iiab.sh from template, to issue warnings (during shell/ssh logins) if iiab-admin password is the default
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template:
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src: profile_ssh_warn.sh
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src: sshpwd-profile-iiab.sh
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dest: /etc/profile.d/
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mode: 0644
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- name: Is this LXDE?
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- name: Is this LXDE-pi?
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stat:
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path: /home/pi/.config/lxsession
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path: /etc/xdg/lxsession/LXDE-pi
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register: lx
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- name: "Likewise for Raspbian, installing: /home/pi/.config/lxsession/LXDE-pi/lxde_ssh_warn.sh"
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- name: "Likewise for Raspbian, installing: /etc/xdg/lxsession/LXDE-pi/sshpwd-lxde-iiab.sh"
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template:
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src: lxde_ssh_warn.sh
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dest: /home/pi/.config/lxsession/LXDE-pi/
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src: sshpwd-lxde-iiab.sh
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dest: /etc/xdg/lxsession/LXDE-pi/
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mode: 0755
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when: lx.stat.isdir is defined and lx.stat.isdir and is_rpi and is_debuntu
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- name: Put line in /home/pi/.config/lxsession/LXDE-pi/autostart to run the above (raspbian)
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# 2019-03-07: This popup (/etc/xdg/lxsession/LXDE-pi/sshpwd-lxde-iiab.sh) does
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# not actually appear when triggered by /etc/xdg/autostart/pprompt-iiab.desktop
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# (or pprompt.desktop as Raspbian has working since 2018-11-13!) Too bad as it
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# would be really nice to standardize this popup across Ubermix & all distros..
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# Is this a permissions/security issue presumably?
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- name: Put line in /etc/xdg/lxsession/LXDE-pi/autostart to run the above (raspbian)
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lineinfile:
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path: /home/pi/.config/lxsession/LXDE-pi/autostart
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line: "@/home/pi/.config/lxsession/LXDE-pi/lxde_ssh_warn.sh"
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path: /etc/xdg/lxsession/LXDE-pi/autostart
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line: "@/etc/xdg/lxsession/LXDE-pi/sshpwd-lxde-iiab.sh"
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when: lx.stat.isdir is defined and lx.stat.isdir and is_rpi and is_debuntu
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@ -1,5 +1,11 @@
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#!/bin/bash
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export TEXTDOMAIN=pprompt-iiab
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. gettext.sh
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# bash syntax "function check_user_pwd() {" was removed, as it prevented all
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# lightdm/graphical logins (incl autologin) on Raspbian: #1252 -> PR #1253
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check_user_pwd() {
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# $meth (hashing method) is typically '6' which implies 5000 rounds
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# of SHA-512 per /etc/login.defs -> /etc/pam.d/common-password
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@ -9,24 +15,14 @@ check_user_pwd() {
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[ $(python3 -c "import crypt; print(crypt.crypt('$2', '\$$meth\$$salt'))") == "\$$meth\$$salt\$$hash" ]
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}
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# credit to the folks at raspberry pi foundatioon
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# Credit to the folks at the Raspberry Pi Foundation
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check_hash() {
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if ! id -u iiab-admin > /dev/null 2>&1 ; then return 0 ; fi
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if grep -q "^PasswordAuthentication\s*no" /etc/ssh/sshd_config ; then return 0 ; fi
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#test -x /usr/bin/mkpasswd || return 0
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#SHADOW="$(sudo -n grep -E '^iiab-admin:' /etc/shadow 2>/dev/null)"
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#test -n "${SHADOW}" || return 0
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#if echo $SHADOW | grep -q "iiab-admin:!" ; then return 0 ; fi
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#SHADOW_PW=$(echo $SHADOW | cut -d: -f2)
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#if [ "$SHADOW_PW" != "\$6\$iiab51\$D.IrrEeLBYIuJkGDmi27pZUGOwPFp98qpl3hxMwWV4hXigFGmdSvy3s/j7tn6OnyTTLmlV7SsN0lCUAFzxSop." ]; then return 0 ; fi
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#if echo "${SHADOW}" | grep -q "${HASH}"; then
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if check_user_pwd "iiab-admin" "{{ iiab_admin_published_pwd }}"; then
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zenity --warning --text="SSH is enabled and the published password for user 'iiab-admin' is in use.\nTHIS IS A SECURITY RISK - please change its password using IIAB's Admin Console (http://box/admin) -> Utilities -> Change Password."
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zenity --warning --width=600 --text="SSH is enabled and the default password for user 'iiab-admin' is in use.\n\nTHIS IS A SECURITY RISK - please change its password using IIAB's Admin Console (http://box.lan/admin) -> Utilities -> Change Password.\n\nSee 'What are the default passwords?' at http://FAQ.IIAB.IO"
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fi
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}
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#if service ssh status | grep -q running; then
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# check_hash
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#fi
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systemctl is-active {{ sshd_service }} > /dev/null && check_hash
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unset check_hash
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@ -1,5 +1,9 @@
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#!/bin/bash
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export TEXTDOMAIN=Linux-PAM
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. gettext.sh
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# bash syntax "function check_user_pwd() {" was removed, as it prevented all
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# lightdm/graphical logins (incl autologin) on Raspbian: #1252 -> PR #1253
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check_user_pwd() {
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@ -11,20 +15,16 @@ check_user_pwd() {
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[ $(python3 -c "import crypt; print(crypt.crypt('$2', '\$$meth\$$salt'))") == "\$$meth\$$salt\$$hash" ]
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}
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# credit to the folks at raspberry pi foundatioon
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# Credit to the folks at the Raspberry Pi Foundation
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check_hash() {
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if ! id -u iiab-admin > /dev/null 2>&1 ; then return 0 ; fi
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if grep -q "^PasswordAuthentication\s*no" /etc/ssh/sshd_config ; then return 0 ; fi
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#SHADOW="$(sudo -n grep -E '^iiab-admin:' /etc/shadow 2>/dev/null)"
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#test -n "${SHADOW}" || return 0
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#if echo $SHADOW | grep -q "iiab-admin:!" ; then return 0 ; fi
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#SHADOW_PW=$(echo $SHADOW | cut -d: -f2)
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#if [ "$SHADOW_PW" != '{{ iiab_admin_pwd_hash }}' ]; then return 0 ; fi
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if check_user_pwd "iiab-admin" "{{ iiab_admin_published_pwd }}"; then
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echo -e "\nSSH is enabled and the published password for user 'iiab-admin' is in use."
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echo -e "THIS IS A SECURITY RISK - please log in as user 'iiab-admin' and run 'passwd'"
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echo -e "to change its password.\n"
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fi
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echo
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echo $(/usr/bin/gettext "SSH is enabled and the published password for user 'iiab-admin' is in use.")
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echo $(/usr/bin/gettext "THIS IS A SECURITY RISK - please run 'sudo passwd iiab-admin' to change it.")
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echo
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fi
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}
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systemctl is-active {{ sshd_service }} > /dev/null && check_hash
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@ -33,6 +33,7 @@ language_priority: en es fr
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iiab_admin_user_install: True
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# If iiab_admin_user_install: False, set iiab_admin_user (below) to an existing
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# Linux user that has sudo access, for login to Admin Console http://box/admin
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# ODDLY THIS IS ALSO USED BY roles/usb-lib/tasks/main.yml TO SET GROUP PERM FOR /library/www/html/local_content (ISN'T {{ apache_user }} MORE APPROPRIATE?)
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iiab_admin_user: iiab-admin
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iiab_admin_published_pwd: g0adm1n # For live checks/alerts of published pwds
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# Password hash to override above, if Ansible creates above user:
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