[PR #7983/49bd9cbd backport][stable-8] Add noexec support to sudoers (#8012)

Add noexec support to sudoers (#7983)

* Add noexec support to sudoers

* Add changelog fragment #7983

* Fix yml formatting in fragment 7983

* Apply suggestions from code review

Co-authored-by: Felix Fontein <felix@fontein.de>

---------

Co-authored-by: Felix Fontein <felix@fontein.de>
(cherry picked from commit 49bd9cbd3c)

Co-authored-by: adaniaud <adaniaud@users.noreply.github.com>

changelogs/fragments/7983-sudoers-add-support-noexec.yml

@@ -0,0 +1,2 @@
+minor_changes:
+  - sudoers - add support for the ``NOEXEC`` tag in sudoers rules (https://github.com/ansible-collections/community.general/pull/7983).

plugins/modules/sudoers.py

@@ -45,6 +45,12 @@ options:
       - The name of the sudoers rule.
       - This will be used for the filename for the sudoers file managed by this rule.
     type: str
+  noexec:
+    description:
+      - Whether a command is prevented to run further commands itself.
+    default: false
+    type: bool
+    version_added: 8.4.0
   nopassword:
     description:
       - Whether a password will be required to run the sudo'd command.
@@ -143,6 +149,15 @@ EXAMPLES = '''
     user: alice
     commands: /usr/local/bin/upload
     setenv: true
+
+- name: >-
+    Allow alice to sudo /usr/bin/less but prevent less from
+    running further commands itself
+  community.general.sudoers:
+    name: allow-alice-restricted-less
+    user: alice
+    commands: /usr/bin/less
+    noexec: true
 '''
 
 import os
@@ -162,6 +177,7 @@ class Sudoers(object):
         self.user = module.params['user']
         self.group = module.params['group']
         self.state = module.params['state']
+        self.noexec = module.params['noexec']
         self.nopassword = module.params['nopassword']
         self.setenv = module.params['setenv']
         self.host = module.params['host']
@@ -205,13 +221,15 @@ class Sudoers(object):
             owner = '%{group}'.format(group=self.group)
 
         commands_str = ', '.join(self.commands)
+        noexec_str = 'NOEXEC:' if self.noexec else ''
         nopasswd_str = 'NOPASSWD:' if self.nopassword else ''
         setenv_str = 'SETENV:' if self.setenv else ''
         runas_str = '({runas})'.format(runas=self.runas) if self.runas is not None else ''
-        return "{owner} {host}={runas}{nopasswd}{setenv} {commands}\n".format(
+        return "{owner} {host}={runas}{noexec}{nopasswd}{setenv} {commands}\n".format(
             owner=owner,
             host=self.host,
             runas=runas_str,
+            noexec=noexec_str,
             nopasswd=nopasswd_str,
             setenv=setenv_str,
             commands=commands_str
@@ -258,6 +276,10 @@ def main():
         'name': {
             'required': True,
         },
+        'noexec': {
+            'type': 'bool',
+            'default': False,
+        },
         'nopassword': {
             'type': 'bool',
             'default': True,

tests/integration/targets/sudoers/tasks/main.yml

@@ -159,6 +159,20 @@
     src: "{{ sudoers_path }}/my-sudo-rule-8"
   register: rule_8_contents
 
+- name: Create rule with noexec parameters
+  community.general.sudoers:
+    name: my-sudo-rule-9
+    state: present
+    user: alice
+    commands: /usr/local/bin/command
+    noexec: true
+  register: rule_9
+
+- name: Grab contents of my-sudo-rule-9
+  ansible.builtin.slurp:
+    src: "{{ sudoers_path }}/my-sudo-rule-9"
+  register: rule_9_contents
+
 - name: Revoke rule 1
   community.general.sudoers:
     name: my-sudo-rule-1
@@ -257,6 +271,7 @@
       - "rule_6_contents['content'] | b64decode == 'alice ALL=(bob)NOPASSWD: /usr/local/bin/command\n'"
       - "rule_7_contents['content'] | b64decode == 'alice host-1=NOPASSWD: /usr/local/bin/command\n'"
       - "rule_8_contents['content'] | b64decode == 'alice ALL=NOPASSWD:SETENV: /usr/local/bin/command\n'"
+      - "rule_9_contents['content'] | b64decode == 'alice ALL=NOEXEC:NOPASSWD: /usr/local/bin/command\n'"
 
 - name: Check revocation stat
   ansible.builtin.assert: