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/common-LDAP/templates/etc | |
| 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/common-LDAP/templates/etc')
| -rw-r--r-- | roles/common-LDAP/templates/etc/ldap/database.ldif.j2 | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/roles/common-LDAP/templates/etc/ldap/database.ldif.j2 b/roles/common-LDAP/templates/etc/ldap/database.ldif.j2 index 1be00cb..b640cbf 100644 --- a/roles/common-LDAP/templates/etc/ldap/database.ldif.j2 +++ b/roles/common-LDAP/templates/etc/ldap/database.ldif.j2 @@ -257,15 +257,15 @@ olcAccess: to dn.children="ou=virtual,dc=fripost,dc=org" # * Postfix may use the base as a searchBase on the MX:es, when # connecting a local ldapi:// socket from the 'private' directory in # one of the non-default instance's chroot. -# * So may Dovecot on the MDA (needed for the iterate filter), when -# SASL-binding using the EXTERNAL mechanism and connecting to a local -# ldapi:// socket. +# * So may _dovecot-auth-proxy on the MDA (needed for the iterate +# logic), when SASL-binding using the EXTERNAL mechanism and +# connecting to a local ldapi:// socket. # * So may Nextcloud on the LDAP provider olcAccess: to dn.exact="ou=virtual,dc=fripost,dc=org" attrs=entry,objectClass filter=(objectClass=FripostVirtual) {% if 'MDA' in group_names -%} - by dn.exact="username=dovecot,cn=peercred,cn=external,cn=auth" sockurl.regex="^ldapi://" =sd + by dn.exact="username=_dovecot-auth-proxy,cn=peercred,cn=external,cn=auth" sockurl.regex="^ldapi://" =sd {% endif -%} {% if 'MX' in group_names or 'MSA' in group_names -%} by dn.exact="username=postfix,cn=peercred,cn=external,cn=auth" sockurl.regex="^ldapi://%2Fvar%2Fspool%2Fpostfix-[-[:alnum:]]+%2Fprivate%2F" =sd @@ -282,7 +282,7 @@ olcAccess: to dn.exact="ou=virtual,dc=fripost,dc=org" # using a TLS-protected connection. # * So has Postfix, when connecting a local ldapi:// socket from the # 'private' directory in one of the non-default instance's chroot. -# * So has Dovecot on the MDA (for the iterate filter), when +# * So has _dovecot-auth-proxy on the MDA (for the iterate logic), when # SASL-binding using the EXTERNAL mechanism and connecting to a local # ldapi:// socket. # * Amavis may use the entry as searchBase (required to look for the @@ -301,7 +301,7 @@ olcAccess: to dn.regex="^fvd=[^,]+,ou=virtual,dc=fripost,dc=org$" {% endif -%} by dn.exact="username=postfix,cn=peercred,cn=external,cn=auth" sockurl.regex="^ldapi://%2Fvar%2Fspool%2Fpostfix-[-[:alnum:]]+%2Fprivate%2F" =rsd {% if 'MDA' in group_names -%} - by dn.exact="username=dovecot,cn=peercred,cn=external,cn=auth" sockurl.regex="^ldapi://" =rsd + by dn.exact="username=_dovecot-auth-proxy,cn=peercred,cn=external,cn=auth" sockurl.regex="^ldapi://" =rsd by dn.exact="username=amavis,cn=peercred,cn=external,cn=auth" sockurl.regex="^ldapi://" =sd {% endif -%} {% if 'MX' in group_names -%} @@ -372,7 +372,7 @@ olcAccess: to dn.regex="^fvd=[^,]+,ou=virtual,dc=fripost,dc=org$" # using a TLS-protected connection. # * So has Postfix, when connecting a local ldapi:// socket from the # 'private' directory in one of the non-default instance's chroot. -# * So has Dovecot on the MDA (for the iterate filter), when +# * So has _dovecot-auth-proxy on the MDA (for the iterate logic), when # SASL-binding using the EXTERNAL mechanism and connecting to a local # ldapi:// socket. # * So has Amavis on the MDA, when SASL-binding using the EXTERNAL @@ -385,7 +385,7 @@ olcAccess: to dn.regex="^fvl=[^,]+,fvd=[^,]+,ou=virtual,dc=fripost,dc=org$" {% endif -%} by dn.exact="username=postfix,cn=peercred,cn=external,cn=auth" sockurl.regex="^ldapi://%2Fvar%2Fspool%2Fpostfix-[-[:alnum:]]+%2Fprivate%2F" =rsd {% if 'MDA' in group_names -%} - by dn.exact="username=dovecot,cn=peercred,cn=external,cn=auth" sockurl.regex="^ldapi://" =rsd + by dn.exact="username=_dovecot-auth-proxy,cn=peercred,cn=external,cn=auth" sockurl.regex="^ldapi://" =rsd by dn.exact="username=amavis,cn=peercred,cn=external,cn=auth" sockurl.regex="^ldapi://" =rsd {% endif -%} by users =0 break |