{"id":"CVE-2020-14354","details":"A possible use-after-free and double-free in c-ares lib version 1.16.0 if ares_destroy() is called prior to ares_getaddrinfo() completing. This flaw possibly allows an attacker to crash the service that uses c-ares lib. The highest threat from this vulnerability is to this service availability.","modified":"2026-05-18T05:53:23.101095921Z","published":"2021-05-13T14:15:17.503Z","database_specific":{"unresolved_ranges":[{"vendor_product":"fedoraproject:fedora","cpes":["cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"],"extracted_events":[{"last_affected":"33"}],"source":"CPE_FIELD"}]},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/"},{"type":"ADVISORY","url":"https://c-ares.haxx.se/changelog.html"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1866838"},{"type":"FIX","url":"https://github.com/c-ares/c-ares/commit/1cc7e83c3bdfaafbc5919c95025592d8de3a170e"},{"type":"EVIDENCE","url":"https://packetstormsecurity.com/files/158755/GS20200804145053.txt"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/c-ares/c-ares","events":[{"introduced":"0"},{"last_affected":"077a587dccbe2f0d8a1987fbd3525333705c2249"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"1.16.0"}],"source":"CPE_FIELD","cpe":"cpe:2.3:a:c-ares:c-ares:1.16.0:*:*:*:*:*:*:*"}}],"versions":["cares-1_16_0","cares-1_15_0","cares-1_14_0","cares-1_13_0","cares-1_12_0","cares-1_11_0","cares-1_11_0-rc1","cares-1_10_0","cares-1_9_1","cares-1_9_0","cares-1_8_0","cares-1_7_5","cares-1_7_4","cares-1_7_3","cares-1_7_2","cares-1_7_1","curl-7_20_0","cares-1_7_0","curl-7_19_7","curl-7_19_6","curl-7_19_5","curl-7_19_4","curl-7_19_3","cares-1_6_0","curl-7_19_2","curl-7_19_0","cares-1_5_3","curl-7_18_2","cares-1_5_2","curl-7_18_1","curl-7_18_0","cares-1_5_1","cares-1_5_0","curl-7_17_1","curl-7_17_0","curl-7_16_4","curl-7_16_3","cares-1_4_0","curl-7_16_2","curl-7_16_1","cares-1_3_2","curl-7_16_0","curl-7_15_6-prepipeline","curl-7_15_5","cares-1_3_1","curl-7_15_4","curl-7_15_3","curl-7_15_1","curl-7_15_0","curl-7_14_1","curl-7_14_0","curl-7_13_2","curl-7_13_1","curl-7_13_0","cares-1_2_1","curl-7_12_2","curl-7_12_1","curl-7_12_0","c-ares-1_2_0","curl-7_11_1","cares-1_1_0","curl-7_11_0","curl-7_10_8"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-14354.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:L"}]}