{"id":"CVE-2019-9721","details":"A denial of service in the subtitle decoder in FFmpeg 3.2 and 4.1 allows attackers to hog the CPU via a crafted video file in Matroska format, because handle_open_brace in libavcodec/htmlsubtitles.c has a complex format argument to sscanf.","modified":"2026-05-14T04:02:00.029986416Z","published":"2019-03-12T09:29:00.577Z","related":["SUSE-SU-2021:2919-1","SUSE-SU-2021:2929-1","openSUSE-SU-2021:2919-1"],"database_specific":{"unresolved_ranges":[{"cpe":"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","extracted_events":[{"last_affected":"18.04"}],"source":"CPE_FIELD"},{"extracted_events":[{"last_affected":"18.10"}],"cpe":"cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*","source":"CPE_FIELD"},{"extracted_events":[{"last_affected":"19.04"}],"cpe":"cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*","source":"CPE_FIELD"}]},"references":[{"type":"WEB","url":"http://www.securityfocus.com/bid/107384"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3967-1/"},{"type":"FIX","url":"https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/894995c41e0795c7a44f81adc4838dedc3932e65"},{"type":"FIX","url":"https://github.com/FFmpeg/FFmpeg/commit/273f2755ce8635d42da3cde0eeba15b2e7842774"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.ffmpeg.org/ffmpeg.git","events":[{"introduced":"0"},{"fixed":"894995c41e0795c7a44f81adc4838dedc3932e65"}],"database_specific":{"source":"REFERENCES"}}],"versions":["n4.2-dev","n4.1-dev","n3.5-dev","n3.4-dev","n3.3-dev","n3.2-dev","n3.1-dev","n2.9-dev","n2.8-dev","n2.7-dev","n2.6-dev","n2.5-dev","n2.4-dev","n2.3-dev","n2.2-dev","n2.0","n2.1-dev","n1.3-dev","n1.2-dev","n1.1-dev","n0.12-dev","n0.11-dev","n0.8","N"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-9721.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/ffmpeg/ffmpeg","events":[{"introduced":"0"},{"last_affected":"340cea9f22c162e10d120835661e132721b7454b"},{"last_affected":"3c1ecb057d7621e57968624aa15ad3e9efc819f7"}],"database_specific":{"cpe":["cpe:2.3:a:ffmpeg:ffmpeg:3.2:*:*:*:*:*:*:*","cpe:2.3:a:ffmpeg:ffmpeg:4.1:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"0"},{"last_affected":"3.2"},{"last_affected":"4.1"}],"source":"CPE_FIELD"}}],"versions":["n4.1-dev","n3.5-dev","n3.4-dev","n3.3-dev","n3.2-dev","n3.1-dev","n2.9-dev","n2.8-dev","n2.7-dev","n2.6-dev","n2.5-dev","n2.4-dev","n2.3-dev","n2.2-dev","n2.0","n2.1-dev","n1.3-dev","n1.2-dev","n1.1-dev","n0.12-dev","n0.11-dev","n0.8","N"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-9721.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}