{"id":"CVE-2018-7557","details":"The decode_init function in libavcodec/utvideodec.c in FFmpeg 2.8 through 3.4.2 allows remote attackers to cause a denial of service (Out of array read) via an AVI file with crafted dimensions within chroma subsampling data.","modified":"2026-04-16T06:23:02.640950379Z","published":"2018-02-28T07:29:00.463Z","references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2019/01/msg00006.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202003-65"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4249"},{"type":"FIX","url":"https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/7414d0bda7763f9bd69c26c068e482ab297c1c96"},{"type":"FIX","url":"https://github.com/FFmpeg/FFmpeg/commit/e724bd1dd9efea3abb8586d6644ec07694afceae"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.ffmpeg.org/ffmpeg.git","events":[{"introduced":"0"},{"fixed":"7414d0bda7763f9bd69c26c068e482ab297c1c96"}]},{"type":"GIT","repo":"https://github.com/ffmpeg/ffmpeg","events":[{"introduced":"58142a27ea96bf9246586a91a82db85e37646933"},{"last_affected":"6a97ba521558ce131fe839eed2d51ff745280e1d"},{"introduced":"0"},{"last_affected":"140fd653aed8cad774f991ba083e2d01e86420c7"},{"fixed":"e724bd1dd9efea3abb8586d6644ec07694afceae"}],"database_specific":{"versions":[{"introduced":"2.8"},{"last_affected":"3.4.2"},{"introduced":"0"},{"last_affected":"8.0"}]}}],"versions":["N","n0.11-dev","n0.12-dev","n0.8","n1.1-dev","n1.2-dev","n1.3-dev","n2.0","n2.1-dev","n2.2-dev","n2.3-dev","n2.4-dev","n2.5-dev","n2.6-dev","n2.7-dev","n2.8","n2.8-dev","n2.8.1","n2.8.10","n2.8.11","n2.8.12","n2.8.13","n2.8.14","n2.8.2","n2.8.3","n2.8.4","n2.8.5","n2.8.6","n2.8.7","n2.8.8","n2.8.9","n2.9-dev","n3.1-dev","n3.2-dev","n3.3-dev","n3.4","n3.4-dev","n3.4.1","n3.4.2","n3.5-dev","n4.1-dev","n4.2-dev","n4.3-dev","n4.4-dev","n4.5-dev","n5.1-dev","n5.2-dev","n6.1-dev","n6.2-dev","n7.1-dev","n7.2-dev","n8.0"],"database_specific":{"vanir_signatures_modified":"2026-04-11T11:39:58Z","vanir_signatures":[{"target":{"function":"decode_init","file":"libavcodec/utvideodec.c"},"id":"CVE-2018-7557-c58f81bb","signature_type":"Function","deprecated":false,"digest":{"length":2014,"function_hash":"261170408201920726981716170408581999831"},"source":"https://github.com/ffmpeg/ffmpeg/commit/e724bd1dd9efea3abb8586d6644ec07694afceae","signature_version":"v1"},{"target":{"file":"libavcodec/utvideodec.c"},"id":"CVE-2018-7557-e1a439bc","signature_type":"Line","deprecated":false,"digest":{"line_hashes":["214294340827385027346326899809308912278","319967151764465081227513198959321650619","160860407430123656188533758835378100984","88426036291747426103396839917112951526","322060800242239300558022628811003160243","294584906807958280719769276673771155382","173453050150287002342984267387285969060","28682244462948592149093618534071984159","105041463035589690360197019114153569694","112286002592890528022285994238400706647"],"threshold":0.9},"source":"https://github.com/ffmpeg/ffmpeg/commit/e724bd1dd9efea3abb8586d6644ec07694afceae","signature_version":"v1"}],"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-7557.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"}]}