{"id":"ALPINE-CVE-2021-3502","details":"A flaw was found in avahi 0.8-5. A reachable assertion is present in avahi_s_host_name_resolver_start function allowing a local attacker to crash the avahi service by requesting hostname resolutions through the avahi socket or dbus methods for invalid hostnames. The highest threat from this vulnerability is to the service availability.","modified":"2026-03-09T01:22:48.592345Z","published":"2021-05-07T12:15:07.267Z","upstream":["CVE-2021-3502"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-3502"}],"affected":[{"package":{"name":"avahi","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/avahi?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8-r5"}]}],"versions":["0.6.28-r0","0.6.28-r1","0.6.28-r2","0.6.29-r0","0.6.30-r0","0.6.30-r1","0.6.30-r2","0.6.30-r3","0.6.30-r4","0.6.31-r0","0.6.31-r1","0.6.31-r2","0.6.31-r3","0.6.31-r4","0.6.31-r5","0.6.31-r6","0.6.31-r7","0.6.31-r8","0.6.32-r0","0.6.32-r1","0.6.32-r2","0.6.32-r3","0.6.32-r4","0.7-r0","0.7-r1","0.7-r2","0.7-r3","0.7-r4","0.8-r0","0.8-r1","0.8-r2","0.8-r3","0.8-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-3502.json"}},{"package":{"name":"avahi","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/avahi?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8-r5"}]}],"versions":["0.6.28-r0","0.6.28-r1","0.6.28-r2","0.6.29-r0","0.6.30-r0","0.6.30-r1","0.6.30-r2","0.6.30-r3","0.6.30-r4","0.6.31-r0","0.6.31-r1","0.6.31-r2","0.6.31-r3","0.6.31-r4","0.6.31-r5","0.6.31-r6","0.6.31-r7","0.6.31-r8","0.6.32-r0","0.6.32-r1","0.6.32-r2","0.6.32-r3","0.6.32-r4","0.7-r0","0.7-r1","0.7-r2","0.7-r3","0.7-r4","0.8-r0","0.8-r1","0.8-r2","0.8-r3","0.8-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-3502.json"}},{"package":{"name":"avahi","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/avahi?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8-r5"}]}],"versions":["0.6.28-r0","0.6.28-r1","0.6.28-r2","0.6.29-r0","0.6.30-r0","0.6.30-r1","0.6.30-r2","0.6.30-r3","0.6.30-r4","0.6.31-r0","0.6.31-r1","0.6.31-r2","0.6.31-r3","0.6.31-r4","0.6.31-r5","0.6.31-r6","0.6.31-r7","0.6.31-r8","0.6.32-r0","0.6.32-r1","0.6.32-r2","0.6.32-r3","0.6.32-r4","0.7-r0","0.7-r1","0.7-r2","0.7-r3","0.7-r4","0.8-r0","0.8-r1","0.8-r2","0.8-r3","0.8-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-3502.json"}},{"package":{"name":"avahi","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/avahi?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8-r5"}]}],"versions":["0.6.28-r0","0.6.28-r1","0.6.28-r2","0.6.29-r0","0.6.30-r0","0.6.30-r1","0.6.30-r2","0.6.30-r3","0.6.30-r4","0.6.31-r0","0.6.31-r1","0.6.31-r2","0.6.31-r3","0.6.31-r4","0.6.31-r5","0.6.31-r6","0.6.31-r7","0.6.31-r8","0.6.32-r0","0.6.32-r1","0.6.32-r2","0.6.32-r3","0.6.32-r4","0.7-r0","0.7-r1","0.7-r2","0.7-r3","0.7-r4","0.8-r0","0.8-r1","0.8-r2","0.8-r3","0.8-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-3502.json"}},{"package":{"name":"avahi","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/avahi?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8-r5"}]}],"versions":["0.6.28-r0","0.6.28-r1","0.6.28-r2","0.6.29-r0","0.6.30-r0","0.6.30-r1","0.6.30-r2","0.6.30-r3","0.6.30-r4","0.6.31-r0","0.6.31-r1","0.6.31-r2","0.6.31-r3","0.6.31-r4","0.6.31-r5","0.6.31-r6","0.6.31-r7","0.6.31-r8","0.6.32-r0","0.6.32-r1","0.6.32-r2","0.6.32-r3","0.6.32-r4","0.7-r0","0.7-r1","0.7-r2","0.7-r3","0.7-r4","0.8-r0","0.8-r1","0.8-r2","0.8-r3","0.8-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-3502.json"}},{"package":{"name":"avahi","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/avahi?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8-r5"}]}],"versions":["0.6.28-r0","0.6.28-r1","0.6.28-r2","0.6.29-r0","0.6.30-r0","0.6.30-r1","0.6.30-r2","0.6.30-r3","0.6.30-r4","0.6.31-r0","0.6.31-r1","0.6.31-r2","0.6.31-r3","0.6.31-r4","0.6.31-r5","0.6.31-r6","0.6.31-r7","0.6.31-r8","0.6.32-r0","0.6.32-r1","0.6.32-r2","0.6.32-r3","0.6.32-r4","0.7-r0","0.7-r1","0.7-r2","0.7-r3","0.7-r4","0.8-r0","0.8-r1","0.8-r2","0.8-r3","0.8-r4"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-3502.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}