From 6d1daa0424c168eae4bfa9f6772add3f77ec506f Mon Sep 17 00:00:00 2001
From: Guilhem Moulin <guilhem@fripost.org>
Date: Wed, 20 May 2020 15:46:27 +0200
Subject: postfix-sender-login: Better hardening.
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Run as a dedicated user, not ‘postfix’.
---
 roles/MSA/tasks/main.yml | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'roles/MSA/tasks/main.yml')

diff --git a/roles/MSA/tasks/main.yml b/roles/MSA/tasks/main.yml
index c78139a..2eee925 100644
--- a/roles/MSA/tasks/main.yml
+++ b/roles/MSA/tasks/main.yml
@@ -6,12 +6,28 @@
     - postfix-pcre
     - postfix-policyd-spf-python
 
+- name: Install Net::LDAP and Authen::SASL
+  apt: pkg={{ packages }}
+  vars:
+    packages:
+    - libnet-ldap-perl
+    - libauthen-sasl-perl
+
 - name: Copy Postfix sender login socketmap
   copy: src=usr/local/bin/postfix-sender-login.pl
         dest=/usr/local/bin/postfix-sender-login.pl
         owner=root group=staff
         mode=0755
 
+- name: Create '_postfix-sender-login' user
+  user: name=_postfix-sender-login system=yes
+        group=nogroup
+        createhome=no
+        home=/nonexistent
+        shell=/usr/sbin/nologin
+        password=!
+        state=present
+
 - name: Copy Postfix sender login socketmap systemd unit files
   copy: src=etc/systemd/system/{{ item }}
         dest=/etc/systemd/system/{{ item }}
-- 
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