{"id":"CVE-2018-18956","details":"The ProcessMimeEntity function in util-decode-mime.c in Suricata 4.x before 4.0.6 allows remote attackers to cause a denial of service (segfault and daemon crash) via crafted input to the SMTP parser, as exploited in the wild in November 2018.","modified":"2026-04-10T04:07:25.304617Z","published":"2018-11-05T21:29:00.257Z","references":[{"type":"ADVISORY","url":"https://redmine.openinfosecfoundation.org/issues/2658#change-10374"},{"type":"ADVISORY","url":"https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-November/016316.html"},{"type":"ADVISORY","url":"https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-October/016227.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/oisf/suricata","events":[{"introduced":"b8428378ac6fb2365337ae765e19dfc0f4548e4a"},{"fixed":"ab751da633e2aea44a210c7ac690a8617efa98cd"}],"database_specific":{"versions":[{"introduced":"4.0.0"},{"fixed":"4.0.6"}]}}],"versions":["suricata-4.0.0","suricata-4.0.1","suricata-4.0.2","suricata-4.0.3","suricata-4.0.4","suricata-4.0.5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-18956.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}