{"id":"ALPINE-CVE-2019-18224","details":"idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.","modified":"2025-12-03T22:46:21.246187Z","published":"2019-10-21T17:15:09.930Z","upstream":["CVE-2019-18224"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2019-18224"}],"affected":[{"package":{"name":"libidn2","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/libidn2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18224.json"}},{"package":{"name":"libidn2","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/libidn2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18224.json"}},{"package":{"name":"libidn2","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/libidn2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18224.json"}},{"package":{"name":"libidn2","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/libidn2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18224.json"}},{"package":{"name":"libidn2","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/libidn2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18224.json"}},{"package":{"name":"libidn2","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/libidn2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18224.json"}},{"package":{"name":"libidn2","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/libidn2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18224.json"}},{"package":{"name":"libidn2","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/libidn2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18224.json"}},{"package":{"name":"libidn2","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/libidn2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18224.json"}},{"package":{"name":"libidn2","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/libidn2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18224.json"}},{"package":{"name":"libidn2","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/libidn2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18224.json"}},{"package":{"name":"libidn2","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/libidn2?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2019-18224.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}