Security update for avahi SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2021:1493-1 Final 1 1 2021-05-04T15:14:08Z current 2021-05-04T15:14:08Z 2021-05-04T15:14:08Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for avahi This update for avahi fixes the following issues: - CVE-2021-3468: avoid infinite loop by handling HUP event in client_work (bsc#1184521). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). Container suse/pcp:latest-2021-1493,Container suse/sle-micro-rancher/5.2:latest-2021-1493,Image SLES15-SP3-BYOS-Azure-2021-1493,Image SLES15-SP3-BYOS-EC2-HVM-2021-1493,Image SLES15-SP3-BYOS-GCE-2021-1493,Image SLES15-SP3-CHOST-BYOS-Aliyun-2021-1493,Image SLES15-SP3-CHOST-BYOS-Azure-2021-1493,Image SLES15-SP3-CHOST-BYOS-EC2-2021-1493,Image SLES15-SP3-CHOST-BYOS-GCE-2021-1493,Image SLES15-SP3-CHOST-BYOS-SAP-CCloud-2021-1493,Image SLES15-SP3-EC2-ECS-HVM-2021-1493,Image SLES15-SP3-EC2-HVM-2021-1493,Image SLES15-SP3-GCE-2021-1493,Image SLES15-SP3-HPC-Azure-2021-1493,Image SLES15-SP3-HPC-BYOS-Azure-2021-1493,Image SLES15-SP3-HPC-BYOS-EC2-HVM-2021-1493,Image SLES15-SP3-HPC-BYOS-GCE-2021-1493,Image SLES15-SP3-Manager-4-2-Proxy-BYOS-Azure-2021-1493,Image SLES15-SP3-Manager-4-2-Proxy-BYOS-EC2-HVM-2021-1493,Image SLES15-SP3-Manager-4-2-Proxy-BYOS-GCE-2021-1493,Image SLES15-SP3-Manager-4-2-Server-BYOS-Azure-2021-1493,Image SLES15-SP3-Manager-4-2-Server-BYOS-EC2-HVM-2021-1493,Image SLES15-SP3-Manager-4-2-Server-BYOS-GCE-2021-1493,Image SLES15-SP3-SAP-Azure-2021-1493,Image SLES15-SP3-SAP-Azure-LI-BYOS-Production-2021-1493,Image SLES15-SP3-SAP-Azure-VLI-BYOS-Production-2021-1493,Image SLES15-SP3-SAP-BYOS-Azure-2021-1493,Image SLES15-SP3-SAP-BYOS-EC2-HVM-2021-1493,Image SLES15-SP3-SAP-BYOS-GCE-2021-1493,Image SLES15-SP3-SAP-EC2-HVM-2021-1493,Image SLES15-SP3-SAP-GCE-2021-1493,Image SLES15-SP3-SAPCAL-Azure-2021-1493,Image SLES15-SP3-SAPCAL-EC2-HVM-2021-1493,Image SLES15-SP3-SAPCAL-GCE-2021-1493,SUSE-2021-1493,SUSE-SLE-Module-Basesystem-15-SP2-2021-1493,SUSE-SLE-Module-Basesystem-15-SP3-2021-1493,SUSE-SLE-Module-Desktop-Applications-15-SP2-2021-1493,SUSE-SLE-Module-Desktop-Applications-15-SP3-2021-1493,SUSE-SLE-Module-Packagehub-Subpackages-15-SP2-2021-1493,SUSE-SLE-Module-Packagehub-Subpackages-15-SP3-2021-1493 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2021/suse-su-20211493-1/ Link for SUSE-SU-2021:1493-1 https://lists.suse.com/pipermail/sle-security-updates/2021-May/008736.html E-Mail link for SUSE-SU-2021:1493-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1184521 SUSE Bug 1184521 https://www.suse.com/security/cve/CVE-2021-3468/ SUSE CVE CVE-2021-3468 page Container suse/pcp:latest Container suse/sle-micro-rancher/5.2:latest Image SLES15-SP3-BYOS-Azure Image SLES15-SP3-BYOS-EC2-HVM Image SLES15-SP3-BYOS-GCE Image SLES15-SP3-CHOST-BYOS-Aliyun Image SLES15-SP3-CHOST-BYOS-Azure Image SLES15-SP3-CHOST-BYOS-EC2 Image SLES15-SP3-CHOST-BYOS-GCE Image SLES15-SP3-CHOST-BYOS-SAP-CCloud Image SLES15-SP3-EC2-ECS-HVM Image SLES15-SP3-EC2-HVM Image SLES15-SP3-GCE Image SLES15-SP3-HPC-Azure Image SLES15-SP3-HPC-BYOS-Azure Image SLES15-SP3-HPC-BYOS-EC2-HVM Image SLES15-SP3-HPC-BYOS-GCE Image SLES15-SP3-Manager-4-2-Proxy-BYOS-Azure Image SLES15-SP3-Manager-4-2-Proxy-BYOS-EC2-HVM Image SLES15-SP3-Manager-4-2-Proxy-BYOS-GCE Image SLES15-SP3-Manager-4-2-Server-BYOS-Azure Image SLES15-SP3-Manager-4-2-Server-BYOS-EC2-HVM Image SLES15-SP3-Manager-4-2-Server-BYOS-GCE Image SLES15-SP3-SAP-Azure Image SLES15-SP3-SAP-Azure-LI-BYOS-Production Image SLES15-SP3-SAP-Azure-VLI-BYOS-Production Image SLES15-SP3-SAP-BYOS-Azure Image SLES15-SP3-SAP-BYOS-EC2-HVM Image SLES15-SP3-SAP-BYOS-GCE Image SLES15-SP3-SAP-EC2-HVM Image SLES15-SP3-SAP-GCE Image SLES15-SP3-SAPCAL-Azure Image SLES15-SP3-SAPCAL-EC2-HVM Image SLES15-SP3-SAPCAL-GCE SUSE Linux Enterprise Module for Basesystem 15 SP2 SUSE Linux Enterprise Module for Basesystem 15 SP3 SUSE Linux Enterprise Module for Desktop Applications 15 SP2 SUSE Linux Enterprise Module for Desktop Applications 15 SP3 SUSE Linux Enterprise Module for Package Hub 15 SP2 SUSE Linux Enterprise Module for Package Hub 15 SP3 libavahi-client3-0.7-3.9.1 libavahi-common3-0.7-3.9.1 avahi-0.7-3.9.1 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of SUSE Linux Enterprise Module for Basesystem 15 SP2 libavahi-client3-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP2 libavahi-client3-32bit-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP2 libavahi-common3-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP2 libavahi-common3-32bit-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP2 libavahi-core7-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP2 libavahi-devel-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP2 libavahi-glib-devel-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP2 libavahi-glib1-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP2 libavahi-gobject0-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP2 libavahi-ui-gtk3-0-0.7-3.9.1 as a component of SUSE Linux Enterprise 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component of SUSE Linux Enterprise Module for Basesystem 15 SP3 libhowl0-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP3 typelib-1_0-Avahi-0_6-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP3 avahi-autoipd-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Desktop Applications 15 SP2 avahi-utils-gtk-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Desktop Applications 15 SP2 libavahi-gobject-devel-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Desktop Applications 15 SP2 avahi-autoipd-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Desktop Applications 15 SP3 avahi-utils-gtk-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Desktop Applications 15 SP3 libavahi-gobject-devel-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Desktop Applications 15 SP3 python3-avahi-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP2 python3-avahi-0.7-3.9.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP3 A flaw was found in avahi in versions 0.6 up to 0.8. The event used to signal the termination of the client connection on the avahi Unix socket is not correctly handled in the client_work function, allowing a local attacker to trigger an infinite loop. The highest threat from this vulnerability is to the availability of the avahi service, which becomes unresponsive after this flaw is triggered. CVE-2021-3468 Container suse/pcp:latest:libavahi-client3-0.7-3.9.1 Container suse/pcp:latest:libavahi-common3-0.7-3.9.1 Container suse/sle-micro-rancher/5.2:latest:avahi-0.7-3.9.1 Container suse/sle-micro-rancher/5.2:latest:libavahi-common3-0.7-3.9.1 Container suse/sle-micro-rancher/5.2:latest:libavahi-core7-0.7-3.9.1 Image SLES15-SP3-BYOS-Azure:libavahi-client3-0.7-3.9.1 Image SLES15-SP3-BYOS-Azure:libavahi-common3-0.7-3.9.1 Image SLES15-SP3-BYOS-EC2-HVM:libavahi-client3-0.7-3.9.1 Image SLES15-SP3-BYOS-EC2-HVM:libavahi-common3-0.7-3.9.1 Image SLES15-SP3-BYOS-GCE:libavahi-client3-0.7-3.9.1 Image SLES15-SP3-BYOS-GCE:libavahi-common3-0.7-3.9.1 Image SLES15-SP3-CHOST-BYOS-Aliyun:libavahi-client3-0.7-3.9.1 Image SLES15-SP3-CHOST-BYOS-Aliyun:libavahi-common3-0.7-3.9.1 Image SLES15-SP3-CHOST-BYOS-Azure:libavahi-client3-0.7-3.9.1 Image SLES15-SP3-CHOST-BYOS-Azure:libavahi-common3-0.7-3.9.1 Image SLES15-SP3-CHOST-BYOS-EC2:libavahi-client3-0.7-3.9.1 Image 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SLES15-SP3-SAPCAL-EC2-HVM:libavahi-common3-0.7-3.9.1 Image SLES15-SP3-SAPCAL-EC2-HVM:libavahi-common3-32bit-0.7-3.9.1 Image SLES15-SP3-SAPCAL-GCE:libavahi-client3-0.7-3.9.1 Image SLES15-SP3-SAPCAL-GCE:libavahi-client3-32bit-0.7-3.9.1 Image SLES15-SP3-SAPCAL-GCE:libavahi-common3-0.7-3.9.1 Image SLES15-SP3-SAPCAL-GCE:libavahi-common3-32bit-0.7-3.9.1 SUSE Linux Enterprise Module for Basesystem 15 SP2:avahi-0.7-3.9.1 SUSE Linux Enterprise Module for Basesystem 15 SP2:avahi-compat-howl-devel-0.7-3.9.1 SUSE Linux Enterprise Module for Basesystem 15 SP2:avahi-compat-mDNSResponder-devel-0.7-3.9.1 SUSE Linux Enterprise Module for Basesystem 15 SP2:avahi-lang-0.7-3.9.1 SUSE Linux Enterprise Module for Basesystem 15 SP2:avahi-utils-0.7-3.9.1 SUSE Linux Enterprise Module for Basesystem 15 SP2:libavahi-client3-0.7-3.9.1 SUSE Linux Enterprise Module for Basesystem 15 SP2:libavahi-client3-32bit-0.7-3.9.1 SUSE Linux Enterprise Module for Basesystem 15 SP2:libavahi-common3-0.7-3.9.1 SUSE Linux 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SP3:python3-avahi-0.7-3.9.1 moderate 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2021/suse-su-20211493-1/ https://www.suse.com/security/cve/CVE-2021-3468.html CVE-2021-3468 https://bugzilla.suse.com/1184521 SUSE Bug 1184521