{"id":"CVE-2019-9717","details":"In Libav 12.3, a denial of service in the subtitle decoder allows attackers to hog the CPU via a crafted video file in Matroska format, because srt_to_ass in libavcodec/srtdec.c has a complex format argument to sscanf.","modified":"2026-07-08T16:08:45.542502Z","published":"2019-09-19T21:15:10.440Z","references":[{"type":"ADVISORY","url":"https://lgtm.com/security/"},{"type":"EVIDENCE","url":"https://github.com/libav/libav/blob/df744e3cf66548c9167ea857104a29d2ea92819e/libavcodec/srtdec.c#L90"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/libav/libav","events":[{"introduced":"0"},{"last_affected":"df744e3cf66548c9167ea857104a29d2ea92819e"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:libav:libav:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"12.3"}]}}],"versions":["v12.3","v12.1","v12","v12_beta1","v12_alpha2","v12_alpha1","v12_dev0","v11_beta1","v11_alpha2","v11_alpha1","v10_beta1","v11_dev0","dev14.2","v10_alpha2","v10_alpha1","v9","v9_beta3","v9_beta2","v9_beta1","v0.8","v0.8b2","v0.8b1","v0.7","v0.7rc1","v0.7b2","v0.7b1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-9717.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"}]}