Security update for avahi

Announcement ID: SUSE-SU-2021:0551-1
Rating: moderate
References:
Cross-References:
CVSS scores:
  • CVE-2021-26720 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-26720 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:
  • Basesystem Module 15-SP2
  • Desktop Applications Module 15-SP2
  • SUSE Linux Enterprise Desktop 15 SP2
  • SUSE Linux Enterprise High Performance Computing 15 SP2
  • SUSE Linux Enterprise Real Time 15 SP2
  • SUSE Linux Enterprise Server 15 SP2
  • SUSE Linux Enterprise Server 15 SP2 Business Critical Linux 15-SP2
  • SUSE Linux Enterprise Server for SAP Applications 15 SP2
  • SUSE Manager Proxy 4.1
  • SUSE Manager Retail Branch Server 4.1
  • SUSE Manager Server 4.1
  • SUSE Package Hub 15 15-SP2

An update that solves one vulnerability can now be installed.

Description:

This update for avahi fixes the following issues:

  • CVE-2021-26720: drop privileges when invoking avahi-daemon-check-dns.sh (bsc#1180827)
  • Update avahi-daemon-check-dns.sh from Debian. Our previous version relied on ifconfig, route, and init.d.
  • Add sudo to requires: used to drop privileges.

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • Basesystem Module 15-SP2
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP2-2021-551=1
  • Desktop Applications Module 15-SP2
    zypper in -t patch SUSE-SLE-Module-Desktop-Applications-15-SP2-2021-551=1
  • SUSE Package Hub 15 15-SP2
    zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP2-2021-551=1

Package List:

  • Basesystem Module 15-SP2 (aarch64 ppc64le s390x x86_64)
    • libavahi-glib1-debuginfo-0.7-3.6.1
    • avahi-compat-mDNSResponder-devel-0.7-3.6.1
    • libavahi-common3-0.7-3.6.1
    • avahi-utils-debuginfo-0.7-3.6.1
    • libavahi-ui0-debuginfo-0.7-3.6.1
    • libavahi-core7-0.7-3.6.1
    • libavahi-gobject0-debuginfo-0.7-3.6.1
    • libavahi-ui-gtk3-0-debuginfo-0.7-3.6.1
    • libavahi-core7-debuginfo-0.7-3.6.1
    • avahi-0.7-3.6.1
    • avahi-debuginfo-0.7-3.6.1
    • libavahi-glib-devel-0.7-3.6.1
    • avahi-compat-howl-devel-0.7-3.6.1
    • libdns_sd-debuginfo-0.7-3.6.1
    • libdns_sd-0.7-3.6.1
    • libavahi-client3-debuginfo-0.7-3.6.1
    • avahi-debugsource-0.7-3.6.1
    • libavahi-client3-0.7-3.6.1
    • avahi-glib2-debugsource-0.7-3.6.1
    • libavahi-common3-debuginfo-0.7-3.6.1
    • avahi-utils-0.7-3.6.1
    • libhowl0-debuginfo-0.7-3.6.1
    • libavahi-gobject0-0.7-3.6.1
    • libhowl0-0.7-3.6.1
    • libavahi-ui-gtk3-0-0.7-3.6.1
    • libavahi-glib1-0.7-3.6.1
    • libavahi-ui0-0.7-3.6.1
    • libavahi-devel-0.7-3.6.1
    • typelib-1_0-Avahi-0_6-0.7-3.6.1
  • Basesystem Module 15-SP2 (noarch)
    • avahi-lang-0.7-3.6.1
  • Basesystem Module 15-SP2 (x86_64)
    • libavahi-client3-32bit-0.7-3.6.1
    • avahi-32bit-debuginfo-0.7-3.6.1
    • libavahi-common3-32bit-0.7-3.6.1
    • libavahi-common3-32bit-debuginfo-0.7-3.6.1
    • libavahi-client3-32bit-debuginfo-0.7-3.6.1
  • Desktop Applications Module 15-SP2 (aarch64 ppc64le s390x x86_64)
    • avahi-utils-gtk-debuginfo-0.7-3.6.1
    • avahi-debuginfo-0.7-3.6.1
    • avahi-debugsource-0.7-3.6.1
    • avahi-autoipd-debuginfo-0.7-3.6.1
    • avahi-utils-gtk-0.7-3.6.1
    • libavahi-gobject-devel-0.7-3.6.1
    • avahi-autoipd-0.7-3.6.1
    • avahi-glib2-debugsource-0.7-3.6.1
  • SUSE Package Hub 15 15-SP2 (aarch64 ppc64le s390x x86_64)
    • python3-avahi-0.7-3.6.1
    • avahi-debugsource-0.7-3.6.1
    • avahi-debuginfo-0.7-3.6.1

References: