{"id":"CVE-2020-14354","aliases":["BELL-CVE-2020-14354","DEBIAN-CVE-2020-14354","EUVD-2020-6498","GHSA-xxmg-3gv9-85h2"],"status":"published","title":"A possible use-after-free and double-free in c-ares lib version 1.16.0 if ares_destroy() is...","description":"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.","severity":{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00529,"percentile":0.45236,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-120","CWE-415","CWE-416"],"published":"2021-05-13T13:38:56Z","modified":"2026-10-26T12:00:36Z","fixes":[{"ecosystem":"Debian:12","package":"c-ares","fixed_in":["1.16.1-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"c-ares","fixed_in":["1.16.1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"c-ares","fixed_in":["1.16.1-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"c-ares","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.1-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"c-ares","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.1-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"c-ares","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.1-1"}]}]}],"products":[{"vendor":"c-ares","product":"c-ares"},{"vendor":"fedoraproject","product":"fedora"}],"references":[{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1866838","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix"]},{"url":"https://packetstormsecurity.com/files/158755/GS20200804145053.txt","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry","evidence"]},{"url":"https://c-ares.haxx.se/changelog.html","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory"]},{"url":"https://github.com/c-ares/c-ares/commit/1cc7e83c3bdfaafbc5919c95025592d8de3a170e","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-14354"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/"},{"url":"https://github.com/advisories/GHSA-xxmg-3gv9-85h2"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2020-14354","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-14354","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2020-14354","description":"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.","status":"published","published":"2021-05-13T13:38:56Z","modified":"2024-08-04T12:39:36.541Z","cwes":["CWE-120"],"updated_at":"2026-11-02T14:35:46.476719Z"}],"euvd":[{"id":"EUVD-2020-6498","description":"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.","status":"published","published":"2021-05-13T13:38:56Z","modified":"2024-08-04T12:39:36Z","updated_at":"2026-11-03T03:07:34.636169Z"}],"ghsa":[{"id":"GHSA-xxmg-3gv9-85h2","title":"A possible use-after-free and double-free in c-ares lib version 1.16.0 if ares_destroy() is...","description":"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.","status":"published","published":"2022-05-24T19:02:23Z","modified":"2023-09-15T12:30:31Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"cwes":["CWE-120","CWE-415","CWE-416"],"updated_at":"2026-11-02T14:54:46.481792Z"}],"nvd":[{"id":"CVE-2020-14354","description":"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.","status":"published","published":"2021-05-13T14:15:17.503Z","modified":"2026-06-17T02:54:36.753Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-120","CWE-415","CWE-416"],"updated_at":"2026-11-02T14:06:39.25999Z"}],"osv":[{"id":"BELL-CVE-2020-14354","title":"CVE-2020-14354 does not affect BellSoft software","status":"withdrawn","published":"2021-05-13T14:15:00Z","modified":"2026-01-26T09:48:52.787368Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"updated_at":"2026-11-02T15:28:15.925958Z"},{"id":"CVE-2020-14354","description":"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.","status":"published","published":"2021-05-13T14:15:17.503Z","modified":"2026-10-20T13:51:15.298235002Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"updated_at":"2026-11-02T15:44:14.418339Z"},{"id":"DEBIAN-CVE-2020-14354","description":"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.","status":"published","published":"2021-05-13T14:15:17.503Z","modified":"2026-10-26T12:00:36.737553244Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"updated_at":"2026-11-02T15:45:32.862554Z"}]}}