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My server is running Ubuntu 17.04 and Dovecot 2.2.27 (c0f36b0). Apparmor
is still complaining about problems with file_inherit. I have put the
profiles in complain-only mode, so I can continue, but still, it's a
problem.
Jul 12 13:31:19 myserver kernel: [ 3905.672577] audit: type=1400
audit(1499859079.016:363): apparmor="ALLOWED" operation="file_inherit"
profile="/usr/lib/dovecot/anvil" pid=3766 comm="anvil" family="unix"
sock_type="stream" protocol=0 requested_mask="send receive"
denied_mask="send receive" addr=none peer_addr=none
peer="/usr/sbin/dovecot"
Jul 12 13:31:19 myserver kernel: [ 3905.672578] audit: type=1400
audit(1499859079.016:364): apparmor="ALLOWED" operation="file_inherit"
profile="/usr/sbin/dovecot" pid=3766 comm="anvil" family="unix"
sock_type="stream" protocol=0 requested_mask="send receive"
denied_mask="send receive" addr=none peer_addr=none
peer="/usr/lib/dovecot/anvil"
My configuration of Dovecot has changed slightly:
/etc/dovecot/dovecot-sql.conf.ext
driver = mysql
connect = host=localhost dbname=mail user=mail password=mailpassword
default_pass_scheme = MD5-CRYPT
password_query = ...
user_query = ...
/etc/dovecot/conf.d/10-auth.conf
disable_plaintext_auth = yes
auth_mechanisms = plain login
#!include auth-system.conf.ext
!include auth-sql.conf.ext
/etc/dovecot/conf.d/10-mail.conf
mail_location = maildir:/var/vmail/%d/%n
mail_uid = vmail
mail_gid = mail
first_valid_uid = 150
last_valid_uid = 150
/etc/dovecot/conf.d/10-ssl.conf
ssl = required
ssl_cert = </etc/ssl/certs/ssl-cert-snakeoil.pem
ssl_key = </etc/ssl/private/ssl-cert-snakeoil.key
ssl_dh_parameters_length = 4096
ssl_protocols = ...
ssl_cipher_list = ...
ssl_prefer_server_ciphers = yes
/etc/dovecot/conf.d/10-master.conf
service auth {
unix_listener auth-userdb {
mode = 0666
user = vmail
group = mail
}
unix_listener /var/spool/postfix/private/auth {
mode = 0666
user = postfix
group = postfix
}
}
/etc/dovecot/conf.d/15-lda.conf
postmaster_address = ...
Apparmor usr.sbin.dovecot profile:
#include <tunables/global>
/usr/sbin/dovecot flags=(complain,attach_disconnected) {
#include <abstractions/authentication>
#include <abstractions/base>
#include <abstractions/dovecot-common>
#include <abstractions/mysql>
#include <abstractions/nameservice>
#include <abstractions/ssl_certs>
#include <abstractions/ssl_keys>
capability chown,
capability dac_override,
capability fsetid,
capability kill,
capability net_bind_service,
capability setuid,
capability sys_chroot,
capability sys_resource,
/etc/dovecot/** r,
/etc/mtab r,
/etc/lsb-release r,
/etc/SuSE-release r,
@{PROC}/@{pid}/mounts r,
/usr/bin/doveconf rix,
/usr/lib/dovecot/anvil Px,
/usr/lib/dovecot/auth Px,
/usr/lib/dovecot/config Px,
/usr/lib/dovecot/dict Px,
/usr/lib/dovecot/dovecot-auth Pxmr,
/usr/lib/dovecot/imap Pxmr,
/usr/lib/dovecot/imap-login Pxmr,
/usr/lib/dovecot/lmtp Px,
/usr/lib/dovecot/log Px,
/usr/lib/dovecot/managesieve Px,
/usr/lib/dovecot/managesieve-login Pxmr,
/usr/lib/dovecot/pop3 Px,
/usr/lib/dovecot/pop3-login Pxmr,
/usr/lib/dovecot/ssl-build-param rix,
/usr/lib/dovecot/ssl-params Px,
/usr/sbin/dovecot mrix,
/usr/share/dovecot/protocols.d/ r,
/usr/share/dovecot/protocols.d/** r,
/var/lib/dovecot/ w,
/var/lib/dovecot/* rwkl,
/var/spool/postfix/private/auth w,
/var/spool/postfix/private/dovecot-lmtp w,
/{,var/}run/dovecot/ rw,
/{,var/}run/dovecot/** rw,
link /{,var/}run/dovecot/** -> /var/lib/dovecot/**,
# Site-specific additions and overrides. See local/README for details.
#include <local/usr.sbin.dovecot>
}
Profile usr.lib.dovecot.anvil:
#include <tunables/global>
/usr/lib/dovecot/anvil flags=(complain) {
#include <abstractions/base>
#include <abstractions/dovecot-common>
capability setuid,
capability sys_chroot,
/usr/lib/dovecot/anvil mr,
# Site-specific additions and overrides. See local/README for details.
#include <local/usr.lib.dovecot.anvil>
}
** Affects: apparmor (Ubuntu)
Importance: Undecided
Status: New
** Tags: apparmor dovecot
--
Dovecot and Apparmor complains at operation file_inherit
https://bugs.launchpad.net/bugs/1703821
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