{"id":"UBUNTU-CVE-2023-38473","details":"A vulnerability was found in Avahi. A reachable assertion exists in the avahi_alternative_host_name() function.","modified":"2026-04-22T14:09:57.450775Z","published":"2023-11-02T16:15:00Z","related":["USN-6487-1"],"upstream":["CVE-2023-38473"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-38473"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-38473"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6487-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-38473"}],"affected":[{"package":{"name":"avahi","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/avahi@0.6.31-4ubuntu1.3+esm3?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.31-4ubuntu1.3+esm3"}]}],"versions":["0.6.31-2ubuntu4","0.6.31-2ubuntu5","0.6.31-3ubuntu1","0.6.31-4ubuntu1","0.6.31-4ubuntu1.1","0.6.31-4ubuntu1.2","0.6.31-4ubuntu1.3","0.6.31-4ubuntu1.3+esm1","0.6.31-4ubuntu1.3+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"avahi-autoipd","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"avahi-daemon","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"avahi-discover","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"avahi-dnsconfd","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"avahi-ui-utils","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"avahi-utils","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"libavahi-client3","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"libavahi-common-data","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"libavahi-common3","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"libavahi-compat-libdnssd1","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"libavahi-core7","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"libavahi-glib1","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"libavahi-gobject0","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"libavahi-qt4-1","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"libavahi-ui-gtk3-0","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"libavahi-ui0","binary_version":"0.6.31-4ubuntu1.3+esm3"},{"binary_name":"python-avahi","binary_version":"0.6.31-4ubuntu1.3+esm3"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-38473.json"}},{"package":{"name":"avahi","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/avahi@0.6.32~rc+dfsg-1ubuntu2.3+esm3?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"}]}],"versions":["0.6.31-4ubuntu4","0.6.32~rc+dfsg-1ubuntu2","0.6.32~rc+dfsg-1ubuntu2.1","0.6.32~rc+dfsg-1ubuntu2.2","0.6.32~rc+dfsg-1ubuntu2.3","0.6.32~rc+dfsg-1ubuntu2.3+esm1","0.6.32~rc+dfsg-1ubuntu2.3+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"avahi-autoipd","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"avahi-daemon","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"avahi-discover","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"avahi-dnsconfd","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"avahi-ui-utils","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"avahi-utils","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"libavahi-client3","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"libavahi-common-data","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"libavahi-common3","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"libavahi-compat-libdnssd1","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"libavahi-core7","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"libavahi-glib1","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"libavahi-gobject0","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"libavahi-qt4-1","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"libavahi-ui-gtk3-0","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"libavahi-ui0","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"},{"binary_name":"python-avahi","binary_version":"0.6.32~rc+dfsg-1ubuntu2.3+esm3"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-38473.json"}},{"package":{"name":"avahi","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/avahi@0.7-3.1ubuntu1.3+esm2?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7-3.1ubuntu1.3+esm2"}]}],"versions":["0.6.32-1ubuntu1","0.7-3ubuntu1","0.7-3ubuntu2","0.7-3.1ubuntu1","0.7-3.1ubuntu1.1","0.7-3.1ubuntu1.2","0.7-3.1ubuntu1.3","0.7-3.1ubuntu1.3+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"avahi-autoipd","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"avahi-daemon","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"avahi-discover","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"avahi-dnsconfd","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"avahi-ui-utils","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"avahi-utils","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"gir1.2-avahi-0.6","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"libavahi-client3","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"libavahi-common-data","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"libavahi-common3","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"libavahi-compat-libdnssd1","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"libavahi-core7","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"libavahi-glib1","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"libavahi-gobject0","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"libavahi-ui-gtk3-0","binary_version":"0.7-3.1ubuntu1.3+esm2"},{"binary_name":"python-avahi","binary_version":"0.7-3.1ubuntu1.3+esm2"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-38473.json"}},{"package":{"name":"avahi","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/avahi@0.7-4ubuntu7.3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7-4ubuntu7.3"}]}],"versions":["0.7-4ubuntu5","0.7-4ubuntu6","0.7-4ubuntu7","0.7-4ubuntu7.1","0.7-4ubuntu7.2"],"ecosystem_specific":{"binaries":[{"binary_name":"avahi-autoipd","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"avahi-daemon","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"avahi-discover","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"avahi-dnsconfd","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"avahi-ui-utils","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"avahi-utils","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"gir1.2-avahi-0.6","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"libavahi-client3","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"libavahi-common-data","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"libavahi-common3","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"libavahi-compat-libdnssd1","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"libavahi-core7","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"libavahi-glib1","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"libavahi-gobject0","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"libavahi-ui-gtk3-0","binary_version":"0.7-4ubuntu7.3"},{"binary_name":"python-avahi","binary_version":"0.7-4ubuntu7.3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-38473.json"}},{"package":{"name":"avahi","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/avahi@0.8-5ubuntu5.2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8-5ubuntu5.2"}]}],"versions":["0.8-5ubuntu4","0.8-5ubuntu5","0.8-5ubuntu5.1"],"ecosystem_specific":{"binaries":[{"binary_name":"avahi-autoipd","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"avahi-daemon","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"avahi-discover","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"avahi-dnsconfd","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"avahi-ui-utils","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"avahi-utils","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"gir1.2-avahi-0.6","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"libavahi-client3","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"libavahi-common-data","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"libavahi-common3","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"libavahi-compat-libdnssd1","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"libavahi-core7","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"libavahi-glib1","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"libavahi-gobject0","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"libavahi-ui-gtk3-0","binary_version":"0.8-5ubuntu5.2"},{"binary_name":"python3-avahi","binary_version":"0.8-5ubuntu5.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-38473.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}