Public bug reported:
Many messages in syslog
audit: type=1400 audit(1585521672.468:40): apparmor="DENIED"
operation="open" profile="/usr/sbin/cups-browsed" name="/etc/mdns.allow"
pid=1323 comm="cups-browsed" requested_mask="r" denied_mask="r" fsuid=0
ouid=0
This is caused by configuring libnss-mdns to resolve local names, with
/etc/nsswitch.conf containing
hosts: files mdns [NOTFOUND=return] dns myhostname
libnss-mnds reads /etc/mdns.allow to find which domains to resolve, but
/etc/apparmor.d/usr.sbin.cups-browsed does not allow access.
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: cups-browsed 1.25.11-0ubuntu1
ProcVersionSignature: Ubuntu 5.3.0-42.34-generic 5.3.18
Uname: Linux 5.3.0-42-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu8.6
Architecture: amd64
CupsErrorLog:
CurrentDesktop: XFCE
Date: Sun Mar 29 15:48:11 2020
InstallationDate: Installed on 2019-10-24 (157 days ago)
InstallationMedia: Xubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
Lpstat: Error: command ['lpstat', '-v'] failed with exit code 1: lpstat: No
destinations added.
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 003: ID 80ee:0021 VirtualBox USB Tablet
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: innotek GmbH VirtualBox
Papersize: letter
ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu_c53lph@/vmlinuz-5.3.0-42-generic
root=ZFS=rpool/ROOT/ubuntu_c53lph ro quiet splash
SourcePackage: cups-filters
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.board.name: VirtualBox
dmi.board.vendor: Oracle Corporation
dmi.board.version: 1.2
dmi.chassis.type: 1
dmi.chassis.vendor: Oracle Corporation
dmi.modalias:
dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
dmi.product.family: Virtual Machine
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH
** Affects: cups-filters (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug eoan
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https://bugs.launchpad.net/bugs/1869632
Title:
AppArmor profile denied access to /etc/mdns.allow
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