{"id":"ALSA-2023:7836","summary":"Moderate: avahi security update","details":"Avahi is an implementation of the DNS Service Discovery and Multicast DNS specifications for Zero Configuration Networking. It facilitates service discovery on a local network. Avahi and Avahi-aware applications allow you to plug your computer into a network and, with no configuration, view other people to chat with, view printers to print with, and find shared files on other computers.\n\nSecurity Fix(es):\n\n* avahi: Local DoS by event-busy-loop from writing long lines to /run/avahi-daemon/socket (CVE-2021-3468)\n* avahi: Reachable assertion in avahi_dns_packet_append_record (CVE-2023-38469)\n* avahi: Reachable assertion in avahi_escape_label (CVE-2023-38470)\n* avahi: Reachable assertion in dbus_set_host_name (CVE-2023-38471)\n* avahi: Reachable assertion in avahi_rdata_parse (CVE-2023-38472)\n* avahi: Reachable assertion in avahi_alternative_host_name (CVE-2023-38473)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-02-04T03:57:07.986973Z","published":"2023-12-14T00:00:00Z","related":["CVE-2021-3468","CVE-2023-38469","CVE-2023-38470","CVE-2023-38471","CVE-2023-38472","CVE-2023-38473"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7836"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2021-3468"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-38469"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-38470"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-38471"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-38472"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-38473"},{"type":"REPORT","url":"https://bugzilla.redhat.com/1939614"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2191687"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2191690"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2191691"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2191692"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2191694"},{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2023-7836.html"}],"affected":[{"package":{"name":"avahi","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/avahi"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7-21.el8_9.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:7836.json"}},{"package":{"name":"avahi-autoipd","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/avahi-autoipd"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7-21.el8_9.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:7836.json"}},{"package":{"name":"avahi-compat-howl","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/avahi-compat-howl"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7-21.el8_9.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:7836.json"}},{"package":{"name":"avahi-compat-howl-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/avahi-compat-howl-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7-21.el8_9.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:7836.json"}},{"package":{"name":"avahi-compat-libdns_sd","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/avahi-compat-libdns_sd"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7-21.el8_9.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:7836.json"}},{"package":{"name":"avahi-compat-libdns_sd-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/avahi-compat-libdns_sd-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7-21.el8_9.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:7836.json"}},{"package":{"name":"avahi-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/avahi-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7-21.el8_9.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:7836.json"}},{"package":{"name":"avahi-glib","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/avahi-glib"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7-21.el8_9.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:7836.json"}},{"package":{"name":"avahi-glib-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/avahi-glib-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7-21.el8_9.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:7836.json"}},{"package":{"name":"avahi-gobject","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/avahi-gobject"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7-21.el8_9.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:7836.json"}},{"package":{"name":"avahi-gobject-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/avahi-gobject-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7-21.el8_9.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:7836.json"}},{"package":{"name":"avahi-libs","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/avahi-libs"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"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