ad_integration - leaks credentials when in check_mode
Resolves:rhbz#2223764 ad_integration - leaks credentials when in check_mode
This commit is contained in:
Rich Megginson
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a0cc364663
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From 1931ebccaa146bd6ee8365c664ab62d294adaa31 Mon Sep 17 00:00:00 2001
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From: Rich Megginson <rmeggins@redhat.com>
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Date: Fri, 18 Aug 2023 12:35:44 -0600
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Subject: [PATCH] fix: use command stdin for password, and do not log password
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Cause: The code was constructing the realm join command to be passed
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via the shell module, including piping the password into the command,
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and was showing the command, including the password, when using
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check mode.
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Consequence: The clear text password was available in the logs when
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using check mode.
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Fix: Use command with stdin for the password instead of shell. The
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password is not part of the command. command with stdin is more
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secure than using shell. The debug output has been changed to
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show the command with the `ad_integration_join_parameters` removed,
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because we cannot know if those parameters contain data which should
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not be logged. Those parameters will still be passed to the actual
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realm join command.
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Result: The password is not logged. The role is more secure.
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Signed-off-by: Rich Megginson <rmeggins@redhat.com>
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---
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tasks/main.yml | 57 ++++++++++++++++++++++++++++----------------------
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1 file changed, 32 insertions(+), 25 deletions(-)
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diff --git a/tasks/main.yml b/tasks/main.yml
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index fe2602e..265c6fe 100644
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--- a/tasks/main.yml
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+++ b/tasks/main.yml
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@@ -3,8 +3,7 @@
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- name: Ensure that mandatory variable ad_integration_realm is available
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fail:
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msg: Variable ad_integration_realm must be provided!
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- when:
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- - not ad_integration_realm
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+ when: not ad_integration_realm
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- name: Assume managing timesync if timesource is set
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set_fact:
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@@ -26,8 +25,7 @@
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- name: Assume managing crypto policies if allow_rc4_crypto is set
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set_fact:
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ad_integration_manage_crypto_policies: true
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- when:
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- - ad_integration_allow_rc4_crypto | bool
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+ when: ad_integration_allow_rc4_crypto | bool
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- name: Ensure manage_crypt_policies is set with crypto_allow_rc4
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fail:
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@@ -141,41 +139,50 @@
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- name: Build Command - Join to a specific Domain Controller
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set_fact:
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- __ad_integration_join_command: |
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- set -euo pipefail
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- echo {{ ad_integration_password | quote }} | realm join -U \
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- {{ ad_integration_user | quote }} --membership-software \
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- {{ ad_integration_membership_software | quote }} \
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- {{ ad_integration_join_parameters }} \
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- {{ ad_integration_join_to_dc | quote }}
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+ __ad_integration_join_command: >-
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+ realm join -U {{ ad_integration_user | quote }} --membership-software
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+ {{ ad_integration_membership_software | quote }}
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+ {{ ad_integration_join_parameters }}
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+ {{ ad_integration_join_to_dc | quote }}
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+ __ad_integration_debug_command: >-
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+ realm join -U {{ ad_integration_user | quote }} --membership-software
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+ {{ ad_integration_membership_software | quote }}
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+ {{ ad_integration_join_to_dc | quote }}
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no_log: true
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- when:
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- - ad_integration_join_to_dc is not none
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+ when: ad_integration_join_to_dc is not none
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- name: Build Join Command - Perform discovery-based realm join operation
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set_fact:
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- __ad_integration_join_command: |
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- set -euo pipefail
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- echo {{ ad_integration_password | quote }} | realm join -U \
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- {{ ad_integration_user | quote }} --membership-software \
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- {{ ad_integration_membership_software | quote }} \
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- {{ ad_integration_join_parameters }} \
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- {{ ad_integration_realm | quote }}
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+ __ad_integration_join_command: >-
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+ realm join -U {{ ad_integration_user | quote }} --membership-software
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+ {{ ad_integration_membership_software | quote }}
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+ {{ ad_integration_join_parameters }}
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+ {{ ad_integration_realm | quote }}
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+ __ad_integration_debug_command: >-
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+ realm join -U {{ ad_integration_user | quote }} --membership-software
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+ {{ ad_integration_membership_software | quote }}
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+ {{ ad_integration_realm | quote }}
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no_log: true
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- when:
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- - ad_integration_join_to_dc is none
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+ when: ad_integration_join_to_dc is none
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- name: Show the join command for debug
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debug:
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- msg: "Would run: '{{ __ad_integration_join_command }}'"
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+ msg:
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+ - >-
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+ Would run the following command. Note that
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+ ad_integration_join_parameters have been removed for security purposes,
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+ the role will pass them to the actual realm join command when running
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+ without check mode.
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+ - "{{ __ad_integration_debug_command }}"
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when:
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- ad_integration_join_to_dc == __ad_integration_sample_dc
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or ad_integration_realm == __ad_integration_sample_realm
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or ansible_check_mode
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- name: Run realm join command
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- # noqa command-instead-of-shell
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- shell: "{{ __ad_integration_join_command }}"
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+ command: "{{ __ad_integration_join_command }}"
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+ args:
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+ stdin: "{{ ad_integration_password }}"
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no_log: true
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when:
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- ad_integration_join_to_dc != __ad_integration_sample_dc
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--
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2.41.0
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@ -34,6 +34,7 @@ Changelog
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### Bug Fixes
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- [ALL - facts being gathered unnecessarily](https://bugzilla.redhat.com/show_bug.cgi?id=2223032)
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- [ad_integration - leaks credentials when in check_mode](https://bugzilla.redhat.com/show_bug.cgi?id=2223764)
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- [certificate - does not re-issue after updating key_size](https://bugzilla.redhat.com/show_bug.cgi?id=2224138)
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- [firewall - fix: reload on resetting to defaults](https://bugzilla.redhat.com/show_bug.cgi?id=2223764)
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- [firewall - Check mode fails with replacing previous rules](https://issues.redhat.com/browse/RHEL-898)
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@ -217,6 +217,8 @@ Source1004: vendoring-build.inc
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Source995: CHANGELOG.md
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Patch2201: 0001-fix-use-command-stdin-for-password-and-do-not-log-pa.patch
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BuildArch: noarch
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%if %{with html}
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@ -329,6 +331,10 @@ if [ "$rolesdir" != "$realrolesdir" ]; then
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fi
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cd ..
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cd %{rolename22}
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%patch2201 -p1
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cd ..
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# vendoring build steps, if any
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%include %{SOURCE1004}
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@ -667,6 +673,7 @@ find %{buildroot}%{ansible_roles_dir} -mindepth 1 -maxdepth 1 | \
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%changelog
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* Tue Aug 15 2023 Rich Megginson <rmeggins@redhat.com> - 1.22.0-1
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- Resolves:rhbz#2223764 : ad_integration - leaks credentials when in check_mode
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- Resolves:rhbz#2232241 : kdump - "Write new authorized_keys if needed" task idempotency issues
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- Resolves:rhbz#2232231 : kdump - system role fails if kdump_ssh_user doesn't have a .ssh/authorized_keys file in home directory
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- Resolves RHEL-1397 : kdump - fix: ensure .ssh directory exists for kdump_ssh_user on kdump_ssh_server
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