diff options
| author | Guilhem Moulin <guilhem@fripost.org> | 2020-05-21 01:35:28 +0200 |
|---|---|---|
| committer | Guilhem Moulin <guilhem@fripost.org> | 2020-05-21 02:26:16 +0200 |
| commit | 5118f8d3394579a245b355c863c69410fe92e26e (patch) | |
| tree | 54fbaf5aca0a1d798fbecca9ba7929f3b25a604e /roles/IMAP/files/etc/systemd | |
| parent | 1df4c30a95abd9e7c6352e2b3d2766281c3e591d (diff) | |
dovecot-auth-proxy: replace directory traversal with LDAP lookups.
This provides better isolation opportunity as the service doesn't need
to run as ‘vmail’ user. We use a dedicated system user instead, and
LDAP ACLs to limit its access to the strict minimum.
The new solution is also more robust to quoting/escaping, and doesn't
depend on ‘home=/home/mail/virtual/%d/%n’ (we might use $entryUUID
instead of %d/%n at some point to make user renaming simpler).
OTOH we no longer lists users that have been removed from LDAP but still
have a mailstore lingering around. This is fair.
Diffstat (limited to 'roles/IMAP/files/etc/systemd')
| -rw-r--r-- | roles/IMAP/files/etc/systemd/system/dovecot-auth-proxy.service | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/roles/IMAP/files/etc/systemd/system/dovecot-auth-proxy.service b/roles/IMAP/files/etc/systemd/system/dovecot-auth-proxy.service index d20f9c2..3ac0b31 100644 --- a/roles/IMAP/files/etc/systemd/system/dovecot-auth-proxy.service +++ b/roles/IMAP/files/etc/systemd/system/dovecot-auth-proxy.service @@ -4,8 +4,7 @@ After=dovecot.target Requires=dovecot-auth-proxy.socket [Service] -User=vmail -Group=vmail +User=_dovecot-auth-proxy StandardInput=null SyslogFacility=mail ExecStart=/usr/local/bin/dovecot-auth-proxy.pl @@ -13,14 +12,13 @@ ExecStart=/usr/local/bin/dovecot-auth-proxy.pl # Hardening NoNewPrivileges=yes PrivateDevices=yes -ProtectSystem=strict -ProtectHome=read-only -PrivateDevices=yes PrivateNetwork=yes +ProtectHome=yes +ProtectSystem=strict ProtectControlGroups=yes ProtectKernelModules=yes ProtectKernelTunables=yes -RestrictAddressFamilies= +RestrictAddressFamilies=AF_UNIX [Install] WantedBy=multi-user.target |