{"id":"UBUNTU-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":"2025-09-08T16:44:47Z","published":"2018-02-28T07:29:00Z","upstream":["CVE-2018-7557"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-7557"},{"type":"REPORT","url":"https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/7414d0bda7763f9bd69c26c068e482ab297c1c96"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-7557"}],"affected":[{"package":{"name":"ffmpeg","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/ffmpeg@7:2.8.15-0ubuntu0.16.04.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:2.8.15-0ubuntu0.16.04.1"}]}],"versions":["7:2.7.2-1build1","7:2.8.1-1ubuntu1","7:2.8.2-1ubuntu1","7:2.8.3-1","7:2.8.4-1","7:2.8.4-1ubuntu1","7:2.8.4-1ubuntu2","7:2.8.4-1ubuntu3","7:2.8.4-1ubuntu4","7:2.8.6-1ubuntu1","7:2.8.6-1ubuntu2","7:2.8.8-0ubuntu0.16.04.1","7:2.8.10-0ubuntu0.16.04.1","7:2.8.11-0ubuntu0.16.04.1","7:2.8.14-0ubuntu0.16.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"ffmpeg"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libav-tools"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavcodec-dev"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavcodec-extra"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavcodec-ffmpeg-extra56"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavcodec-ffmpeg56"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavdevice-dev"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavdevice-ffmpeg56"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavfilter-dev"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavfilter-ffmpeg5"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavformat-dev"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavformat-ffmpeg56"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavresample-dev"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavresample-ffmpeg2"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavutil-dev"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libavutil-ffmpeg54"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libpostproc-dev"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libpostproc-ffmpeg53"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libswresample-dev"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libswresample-ffmpeg1"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libswscale-dev"},{"binary_version":"7:2.8.15-0ubuntu0.16.04.1","binary_name":"libswscale-ffmpeg3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-7557.json"}},{"package":{"name":"ffmpeg","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/ffmpeg@7:3.4.4-0ubuntu0.18.04.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:3.4.4-0ubuntu0.18.04.1"}]}],"versions":["7:3.3.4-2","7:3.3.4-2build3","7:3.4-2ubuntu2","7:3.4-4","7:3.4-4build1","7:3.4.1-1","7:3.4.1-1build1","7:3.4.2-1","7:3.4.2-1build1","7:3.4.2-2"],"ecosystem_specific":{"binaries":[{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"ffmpeg"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavcodec-dev"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavcodec-extra"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavcodec-extra57"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavcodec57"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavdevice-dev"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavdevice57"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavfilter-dev"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavfilter-extra"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavfilter-extra6"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavfilter6"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavformat-dev"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavformat57"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavresample-dev"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavresample3"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavutil-dev"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libavutil55"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libpostproc-dev"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libpostproc54"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libswresample-dev"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libswresample2"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libswscale-dev"},{"binary_version":"7:3.4.4-0ubuntu0.18.04.1","binary_name":"libswscale4"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-7557.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}