{"id":"CVE-2020-20891","details":"Buffer Overflow vulnerability in function config_input in libavfilter/vf_gblur.c in Ffmpeg 4.2.1, allows attackers to cause a Denial of Service or other unspecified impacts.","modified":"2026-08-17T05:26:20.758726Z","published":"2021-09-20T16:15:08.893Z","related":["SUSE-SU-2021:3521-1","SUSE-SU-2023:0005-1","openSUSE-SU-2021:3521-1"],"references":[{"type":"ADVISORY","url":"https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/64a805883d7223c868a683f0030837d859edd2ab"},{"type":"REPORT","url":"https://trac.ffmpeg.org/ticket/8282"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.ffmpeg.org/ffmpeg.git","events":[{"introduced":"1529dfb73a5157dcb8762051ec4c8d8341762478"},{"last_affected":"1529dfb73a5157dcb8762051ec4c8d8341762478"},{"fixed":"64a805883d7223c868a683f0030837d859edd2ab"}],"database_specific":{"cpe":"cpe:2.3:a:ffmpeg:ffmpeg:4.2.1:*:*:*:*:*:*:*","extracted_events":[{"introduced":"4.2.1"},{"last_affected":"4.2.1"}],"source":["CPE_STRING","REFERENCES"]}}],"versions":["4.2.1","n4.2.1"],"database_specific":{"vanir_signatures":[{"deprecated":false,"digest":{"function_hash":"5812123969433413664749728480812895768","length":786},"id":"CVE-2020-20891-8616516e","signature_type":"Function","signature_version":"v1","source":"https://git.ffmpeg.org/ffmpeg.git@64a805883d7223c868a683f0030837d859edd2ab","target":{"file":"libavfilter/vf_gblur.c","function":"config_input"}},{"deprecated":false,"digest":{"line_hashes":["140308164302456955343886306517915745377","6860359504303513529012831916119332737","138465174164862388458175076057970697104","46195152818601170111770941279977943669"],"threshold":0.9},"id":"CVE-2020-20891-e354d7de","signature_type":"Line","signature_version":"v1","source":"https://git.ffmpeg.org/ffmpeg.git@64a805883d7223c868a683f0030837d859edd2ab","target":{"file":"libavfilter/vf_gblur.c"}}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-20891.json","vanir_signatures_modified":"2026-08-17T05:26:20Z"}},{"ranges":[{"type":"GIT","repo":"https://github.com/ffmpeg/ffmpeg","events":[{"introduced":"1529dfb73a5157dcb8762051ec4c8d8341762478"},{"last_affected":"1529dfb73a5157dcb8762051ec4c8d8341762478"}],"database_specific":{"cpe":"cpe:2.3:a:ffmpeg:ffmpeg:4.2.1:*:*:*:*:*:*:*","extracted_events":[{"introduced":"4.2.1"},{"last_affected":"4.2.1"}],"source":"CPE_STRING"}}],"versions":["4.2.1","n4.2.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-20891.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}