Security update for avahi

Announcement ID:	SUSE-SU-2021:1845-1
Rating:	important
References:	bsc#1180827 bsc#1184521
Cross-References:	CVE-2021-26720 CVE-2021-3468
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 CVE-2021-3468 ( SUSE ): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2021-3468 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products:	SUSE Linux Enterprise High Performance Computing 15 SUSE Linux Enterprise High Performance Computing 15 LTSS 15 SUSE Linux Enterprise Server 15 SUSE Linux Enterprise Server 15 LTSS 15 SUSE Linux Enterprise Server ESPOS 15 SUSE Linux Enterprise Server for SAP Applications 15

An update that solves two vulnerabilities can now be installed.

Description:

This update for avahi fixes the following issues:

• CVE-2021-3468: avoid infinite loop by handling HUP event in client_work (bsc#1184521).
• 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:

• SUSE Linux Enterprise Server ESPOS 15
  zypper in -t patch SUSE-SLE-Product-HPC-15-2021-1845=1
• SUSE Linux Enterprise High Performance Computing 15 LTSS 15
  zypper in -t patch SUSE-SLE-Product-HPC-15-2021-1845=1
• SUSE Linux Enterprise Server 15 LTSS 15
  zypper in -t patch SUSE-SLE-Product-SLES-15-2021-1845=1
• SUSE Linux Enterprise Server for SAP Applications 15
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-2021-1845=1

Package List:

• SUSE Linux Enterprise Server ESPOS 15 (aarch64 x86_64)
  • libavahi-gobject0-debuginfo-0.6.32-5.13.1
  • libavahi-gobject0-0.6.32-5.13.1
  • libhowl0-0.6.32-5.13.1
  • avahi-utils-debuginfo-0.6.32-5.13.1
  • avahi-utils-0.6.32-5.13.1
  • avahi-autoipd-0.6.32-5.13.1
  • libavahi-devel-0.6.32-5.13.1
  • libavahi-core7-0.6.32-5.13.1
  • libavahi-glib-devel-0.6.32-5.13.1
  • libdns_sd-0.6.32-5.13.1
  • avahi-glib2-debugsource-0.6.32-5.13.1
  • avahi-utils-gtk-0.6.32-5.13.1
  • libavahi-ui0-debuginfo-0.6.32-5.13.1
  • libhowl0-debuginfo-0.6.32-5.13.1
  • avahi-compat-mDNSResponder-devel-0.6.32-5.13.1
  • avahi-debugsource-0.6.32-5.13.1
  • typelib-1_0-Avahi-0_6-0.6.32-5.13.1
  • avahi-debuginfo-0.6.32-5.13.1
  • libavahi-glib1-debuginfo-0.6.32-5.13.1
  • libavahi-ui0-0.6.32-5.13.1
  • avahi-utils-gtk-debuginfo-0.6.32-5.13.1
  • libavahi-ui-gtk3-0-0.6.32-5.13.1
  • libavahi-client3-0.6.32-5.13.1
  • libavahi-common3-0.6.32-5.13.1
  • libdns_sd-debuginfo-0.6.32-5.13.1
  • libavahi-glib1-0.6.32-5.13.1
  • libavahi-core7-debuginfo-0.6.32-5.13.1
  • libavahi-ui-gtk3-0-debuginfo-0.6.32-5.13.1
  • libavahi-common3-debuginfo-0.6.32-5.13.1
  • libavahi-client3-debuginfo-0.6.32-5.13.1
  • avahi-compat-howl-devel-0.6.32-5.13.1
  • libavahi-gobject-devel-0.6.32-5.13.1
  • avahi-0.6.32-5.13.1
  • avahi-autoipd-debuginfo-0.6.32-5.13.1
• SUSE Linux Enterprise Server ESPOS 15 (noarch)
  • avahi-lang-0.6.32-5.13.1
• SUSE Linux Enterprise Server ESPOS 15 (x86_64)
  • libavahi-client3-32bit-debuginfo-0.6.32-5.13.1
  • avahi-32bit-debuginfo-0.6.32-5.13.1
  • libavahi-client3-32bit-0.6.32-5.13.1
  • libavahi-common3-32bit-debuginfo-0.6.32-5.13.1
  • libavahi-common3-32bit-0.6.32-5.13.1
• SUSE Linux Enterprise High Performance Computing 15 LTSS 15 (aarch64 x86_64)
  • libavahi-gobject0-debuginfo-0.6.32-5.13.1
  • libavahi-gobject0-0.6.32-5.13.1
  • libhowl0-0.6.32-5.13.1
  • avahi-utils-debuginfo-0.6.32-5.13.1
  • avahi-utils-0.6.32-5.13.1
  • avahi-autoipd-0.6.32-5.13.1
  • libavahi-devel-0.6.32-5.13.1
  • libavahi-core7-0.6.32-5.13.1
  • libavahi-glib-devel-0.6.32-5.13.1
  • libdns_sd-0.6.32-5.13.1
  • avahi-glib2-debugsource-0.6.32-5.13.1
  • avahi-utils-gtk-0.6.32-5.13.1
  • libavahi-ui0-debuginfo-0.6.32-5.13.1
  • libhowl0-debuginfo-0.6.32-5.13.1
  • avahi-compat-mDNSResponder-devel-0.6.32-5.13.1
  • avahi-debugsource-0.6.32-5.13.1
  • typelib-1_0-Avahi-0_6-0.6.32-5.13.1
  • avahi-debuginfo-0.6.32-5.13.1
  • libavahi-glib1-debuginfo-0.6.32-5.13.1
  • libavahi-ui0-0.6.32-5.13.1
  • avahi-utils-gtk-debuginfo-0.6.32-5.13.1
  • libavahi-ui-gtk3-0-0.6.32-5.13.1
  • libavahi-client3-0.6.32-5.13.1
  • libavahi-common3-0.6.32-5.13.1
  • libdns_sd-debuginfo-0.6.32-5.13.1
  • libavahi-glib1-0.6.32-5.13.1
  • libavahi-core7-debuginfo-0.6.32-5.13.1
  • libavahi-ui-gtk3-0-debuginfo-0.6.32-5.13.1
  • libavahi-common3-debuginfo-0.6.32-5.13.1
  • libavahi-client3-debuginfo-0.6.32-5.13.1
  • avahi-compat-howl-devel-0.6.32-5.13.1
  • libavahi-gobject-devel-0.6.32-5.13.1
  • avahi-0.6.32-5.13.1
  • avahi-autoipd-debuginfo-0.6.32-5.13.1
• SUSE Linux Enterprise High Performance Computing 15 LTSS 15 (noarch)
  • avahi-lang-0.6.32-5.13.1
• SUSE Linux Enterprise High Performance Computing 15 LTSS 15 (x86_64)
  • libavahi-client3-32bit-debuginfo-0.6.32-5.13.1
  • avahi-32bit-debuginfo-0.6.32-5.13.1
  • libavahi-client3-32bit-0.6.32-5.13.1
  • libavahi-common3-32bit-debuginfo-0.6.32-5.13.1
  • libavahi-common3-32bit-0.6.32-5.13.1
• SUSE Linux Enterprise Server 15 LTSS 15 (aarch64 ppc64le s390x x86_64)
  • libavahi-gobject0-debuginfo-0.6.32-5.13.1
  • libavahi-gobject0-0.6.32-5.13.1
  • libhowl0-0.6.32-5.13.1
  • avahi-utils-debuginfo-0.6.32-5.13.1
  • avahi-utils-0.6.32-5.13.1
  • avahi-autoipd-0.6.32-5.13.1
  • libavahi-devel-0.6.32-5.13.1
  • libavahi-core7-0.6.32-5.13.1
  • libavahi-glib-devel-0.6.32-5.13.1
  • libdns_sd-0.6.32-5.13.1
  • avahi-glib2-debugsource-0.6.32-5.13.1
  • avahi-utils-gtk-0.6.32-5.13.1
  • libavahi-ui0-debuginfo-0.6.32-5.13.1
  • libhowl0-debuginfo-0.6.32-5.13.1
  • avahi-compat-mDNSResponder-devel-0.6.32-5.13.1
  • avahi-debugsource-0.6.32-5.13.1
  • typelib-1_0-Avahi-0_6-0.6.32-5.13.1
  • avahi-debuginfo-0.6.32-5.13.1
  • libavahi-glib1-debuginfo-0.6.32-5.13.1
  • libavahi-ui0-0.6.32-5.13.1
  • avahi-utils-gtk-debuginfo-0.6.32-5.13.1
  • libavahi-ui-gtk3-0-0.6.32-5.13.1
  • libavahi-client3-0.6.32-5.13.1
  • libavahi-common3-0.6.32-5.13.1
  • libdns_sd-debuginfo-0.6.32-5.13.1
  • libavahi-glib1-0.6.32-5.13.1
  • libavahi-core7-debuginfo-0.6.32-5.13.1
  • libavahi-ui-gtk3-0-debuginfo-0.6.32-5.13.1
  • libavahi-common3-debuginfo-0.6.32-5.13.1
  • libavahi-client3-debuginfo-0.6.32-5.13.1
  • avahi-compat-howl-devel-0.6.32-5.13.1
  • libavahi-gobject-devel-0.6.32-5.13.1
  • avahi-0.6.32-5.13.1
  • avahi-autoipd-debuginfo-0.6.32-5.13.1
• SUSE Linux Enterprise Server 15 LTSS 15 (noarch)
  • avahi-lang-0.6.32-5.13.1
• SUSE Linux Enterprise Server 15 LTSS 15 (x86_64)
  • libavahi-client3-32bit-debuginfo-0.6.32-5.13.1
  • avahi-32bit-debuginfo-0.6.32-5.13.1
  • libavahi-client3-32bit-0.6.32-5.13.1
  • libavahi-common3-32bit-debuginfo-0.6.32-5.13.1
  • libavahi-common3-32bit-0.6.32-5.13.1
• SUSE Linux Enterprise Server for SAP Applications 15 (ppc64le x86_64)
  • libavahi-gobject0-debuginfo-0.6.32-5.13.1
  • libavahi-gobject0-0.6.32-5.13.1
  • libhowl0-0.6.32-5.13.1
  • avahi-utils-debuginfo-0.6.32-5.13.1
  • avahi-utils-0.6.32-5.13.1
  • avahi-autoipd-0.6.32-5.13.1
  • libavahi-devel-0.6.32-5.13.1
  • libavahi-core7-0.6.32-5.13.1
  • libavahi-glib-devel-0.6.32-5.13.1
  • libdns_sd-0.6.32-5.13.1
  • avahi-glib2-debugsource-0.6.32-5.13.1
  • avahi-utils-gtk-0.6.32-5.13.1
  • libavahi-ui0-debuginfo-0.6.32-5.13.1
  • libhowl0-debuginfo-0.6.32-5.13.1
  • avahi-compat-mDNSResponder-devel-0.6.32-5.13.1
  • avahi-debugsource-0.6.32-5.13.1
  • typelib-1_0-Avahi-0_6-0.6.32-5.13.1
  • avahi-debuginfo-0.6.32-5.13.1
  • libavahi-glib1-debuginfo-0.6.32-5.13.1
  • libavahi-ui0-0.6.32-5.13.1
  • avahi-utils-gtk-debuginfo-0.6.32-5.13.1
  • libavahi-ui-gtk3-0-0.6.32-5.13.1
  • libavahi-client3-0.6.32-5.13.1
  • libavahi-common3-0.6.32-5.13.1
  • libdns_sd-debuginfo-0.6.32-5.13.1
  • libavahi-glib1-0.6.32-5.13.1
  • libavahi-core7-debuginfo-0.6.32-5.13.1
  • libavahi-ui-gtk3-0-debuginfo-0.6.32-5.13.1
  • libavahi-common3-debuginfo-0.6.32-5.13.1
  • libavahi-client3-debuginfo-0.6.32-5.13.1
  • avahi-compat-howl-devel-0.6.32-5.13.1
  • libavahi-gobject-devel-0.6.32-5.13.1
  • avahi-0.6.32-5.13.1
  • avahi-autoipd-debuginfo-0.6.32-5.13.1
• SUSE Linux Enterprise Server for SAP Applications 15 (noarch)
  • avahi-lang-0.6.32-5.13.1
• SUSE Linux Enterprise Server for SAP Applications 15 (x86_64)
  • libavahi-client3-32bit-debuginfo-0.6.32-5.13.1
  • avahi-32bit-debuginfo-0.6.32-5.13.1
  • libavahi-client3-32bit-0.6.32-5.13.1
  • libavahi-common3-32bit-debuginfo-0.6.32-5.13.1
  • libavahi-common3-32bit-0.6.32-5.13.1

References:

• https://www.suse.com/security/cve/CVE-2021-26720.html
• https://www.suse.com/security/cve/CVE-2021-3468.html
• https://bugzilla.suse.com/show_bug.cgi?id=1180827
• https://bugzilla.suse.com/show_bug.cgi?id=1184521