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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.","status":"published","published":"2019-03-12T06:00:00Z","modified":"2024-08-04T22:01:53.919Z","updated_at":"2026-11-02T14:20:20.081405Z"}],"euvd":[{"id":"EUVD-2019-19086","description":"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.","status":"published","published":"2019-03-12T06:00:00Z","modified":"2024-08-04T22:01:53Z","updated_at":"2026-11-03T03:06:37.634716Z"}],"ghsa":[{"id":"GHSA-hjv9-2v6w-8wp3","title":"A denial of service in the subtitle decoder in FFmpeg 3.2 and 4.1 allows attackers to hog the CPU...","description":"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.","status":"published","published":"2022-05-13T01:12:16Z","modified":"2023-01-28T05:04:49Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:44:15.089148Z"}],"nvd":[{"id":"CVE-2019-9721","description":"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.","status":"published","published":"2019-03-12T09:29:00.577Z","modified":"2026-06-17T02:44:13.997Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:05:07.268578Z"}],"osv":[{"id":"ALPINE-CVE-2019-9721","description":"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.","status":"published","published":"2019-03-12T09:29:00.577Z","modified":"2026-11-03T06:32:23.066689747Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T07:17:57.723967Z"},{"id":"CVE-2019-9721","description":"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.","status":"published","published":"2019-03-12T09:29:00.577Z","modified":"2026-11-07T13:04:34.056030163Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-07T11:15:38.581573Z"},{"id":"DEBIAN-CVE-2019-9721","description":"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.","status":"published","published":"2019-03-12T09:29:00.577Z","modified":"2026-09-21T07:00:47.928431086Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:32.57265Z"},{"id":"JLSEC-2025-103","title":"A denial of service in the subtitle decoder in FFmpeg 3.2 and 4.1 allows attackers to hog the CPU...","description":"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.","status":"published","published":"2025-10-19T19:08:53.76Z","modified":"2026-07-23T22:30:05.1120104Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:47:17.805107Z"},{"id":"UBUNTU-CVE-2019-9721","description":"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.","status":"published","published":"2019-03-12T00:00:00Z","modified":"2026-04-22T12:24:38.445394Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:22.212782Z"},{"id":"openSUSE-SU-2021:2919-1","title":"Security update for ffmpeg","description":"This update for ffmpeg fixes the following issues:\n\n- CVE-2019-9721: Fix denial of service in the subtitle decoder in handle_open_brace from libavcodec/htmlsubtitles.c (bsc#1129714).\n- CVE-2020-22046: Fix a denial of service vulnerability exists in FFmpeg 4.2 due to a memory leak in the avpriv_float_dsp_allocl function in libavutil/float_dsp.c (bsc#1186849).\n- CVE-2020-22048: Fix a denial of service vulnerability exists in FFmpeg 4.2 due to a memory leak in the ff_frame_pool_get function in framepool.c (bsc#1186859).\n- CVE-2020-22049: Fix a denial of service vulnerability exists in FFmpeg 4.2 due to a memory leak in the wtvfile_open_sector function in wtvdec.c (bsc#1186861).\n- CVE-2020-22054: Fix a denial of service vulnerability exists in FFmpeg 4.2 due to a memory leak in the av_dict_set function in dict.c (bsc#1186863).\n- CVE-2020-21688: Fixed a heap-use-after-free in the av_freep function in libavutil/mem.c (bsc#1189348).\n- CVE-2020-21697: Fixed a heap-use-after-free in the mpeg_mux_write_packet function in libavformat/mpegenc.c (bsc#1189350).\n- CVE-2021-38114: Fixed a not checked return value of the init_vlc function (bsc#1189142).\n","status":"published","published":"2021-09-02T08:05:13Z","modified":"2026-02-04T03:43:45.88743Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"SUSE-SU-2021:2919-1","title":"Security update for ffmpeg","description":"This update for ffmpeg fixes the following issues:\n\n- CVE-2019-9721: Fix denial of service in the subtitle decoder in handle_open_brace from libavcodec/htmlsubtitles.c (bsc#1129714).\n- CVE-2020-22046: Fix a denial of service vulnerability exists in FFmpeg 4.2 due to a memory leak in the avpriv_float_dsp_allocl function in libavutil/float_dsp.c (bsc#1186849).\n- CVE-2020-22048: Fix a denial of service vulnerability exists in FFmpeg 4.2 due to a memory leak in the ff_frame_pool_get function in framepool.c (bsc#1186859).\n- CVE-2020-22049: Fix a denial of service vulnerability exists in FFmpeg 4.2 due to a memory leak in the wtvfile_open_sector function in wtvdec.c (bsc#1186861).\n- CVE-2020-22054: Fix a denial of service vulnerability exists in FFmpeg 4.2 due to a memory leak in the av_dict_set function in dict.c (bsc#1186863).\n- CVE-2020-21688: Fixed a heap-use-after-free in the av_freep function in libavutil/mem.c (bsc#1189348).\n- CVE-2020-21697: Fixed a heap-use-after-free in the mpeg_mux_write_packet function in libavformat/mpegenc.c (bsc#1189350).\n- CVE-2021-38114: Fixed a not checked return value of the init_vlc function (bsc#1189142).\n","status":"published","published":"2021-09-02T08:05:11Z","modified":"2026-02-04T04:31:34.995316Z","updated_at":"2026-11-02T15:53:49.605187Z"},{"id":"SUSE-SU-2021:2929-1","title":"Security update for ffmpeg","description":"This update for ffmpeg fixes the following issues:\n\n- CVE-2019-9721: Fixed a denial of service in the subtitle decoder in handle_open_brace from libavcodec/htmlsubtitles.c (bsc#1129714).\n- CVE-2020-22046: Fixed a denial of service vulnerability due to a memory leak in the avpriv_float_dsp_allocl function in libavutil/float_dsp.c (bsc#1186849).\n- CVE-2020-22048: Fixed a denial of service vulnerability due to a memory leak in the ff_frame_pool_get function in framepool.c (bsc#1186859).\n- CVE-2020-22049: Fixed a denial of service vulnerability caused by a memory leak in the wtvfile_open_sector function in wtvdec.c (bsc#1186861).\n- CVE-2020-22054: Fixed a denial of service vulnerability due to a memory leak in the av_dict_set function in dict.c (bsc#1186863).\n- CVE-2020-13904: Fixed use-after-free via a crafted EXTINF duration in an m3u8 file (bsc#1172640).\n- CVE-2020-21041: Fixed buffer overflow vulnerability via apng_do_inverse_blend in libavcodec/pngenc.c  (bsc#1186406).\n- CVE-2019-17539: Fixed NULL pointer dereference in avcodec_open2 in libavcodec/utils.c (bsc# 1154065).\n- CVE-2020-22026: Fixed buffer overflow vulnerability in config_input() at libavfilter/af_tremolo.c (bsc#1186583).\n- CVE-2020-22021: Fixed buffer overflow vulnerability in filter_edges function in libavfilter/vf_yadif.c (bsc#1186586).\n- CVE-2020-22020: Fixed buffer overflow vulnerability in build_diff_map() in libavfilter/vf_fieldmatch.c (bsc#1186587).\n- CVE-2020-22015: Fixed buffer overflow vulnerability in mov_write_video_tag() due to the out of bounds in libavformat/movenc.c (bsc#1186596).\n- CVE-2020-22016: Fixed a heap-based Buffer Overflow vulnerability at libavcodec/get_bits.h when writing .mov files (bsc#1186598).\n- CVE-2020-22017: Fixed a heap-based Buffer Overflow vulnerability in ff_fill_rectangle() in libavfilter/drawutils.c (bsc#1186600).\n- CVE-2020-22022: Fixed a heap-based Buffer Overflow vulnerability in filter_frame at libavfilter/vf_fieldorder.c (bsc#1186603).\n- CVE-2020-22023: Fixed a heap-based Buffer Overflow vulnerability in filter_frame at libavfilter/vf_bitplanenoise.c (bsc#1186604)\n- CVE-2020-22025: Fixed a heap-based Buffer Overflow vulnerability in gaussian_blur at libavfilter/vf_edgedetect.c (bsc#1186605).\n- CVE-2020-22031: Fixed a heap-based Buffer Overflow vulnerability at libavfilter/vf_w3fdif.c in filter16_complex_low() (bsc#1186613).\n- CVE-2020-22032: Fixed a heap-based Buffer Overflow vulnerability at libavfilter/vf_edgedetect.c in gaussian_blur() (bsc#1186614).\n- CVE-2020-22034: Fixed a heap-based Buffer Overflow vulnerability at libavfilter/vf_floodfill.c (bsc#1186616).\n- CVE-2020-20451: Fixed denial of service issue due to resource management errors via fftools/cmdutils.c (bsc#1186658).\n- CVE-2020-20448: Fixed divide by zero issue via libavcodec/ratecontrol.c (bsc#1186660).\n- CVE-2020-22038: Fixed denial of service vulnerability due to a memory leak in the ff_v4l2_m2m_create_context function in v4l2_m2m.c (bsc#1186757).\n- CVE-2020-22039: Fixed denial of service vulnerability due to a memory leak in the inavi_add_ientry function (bsc#1186758).\n- CVE-2020-22043: Fixed denial of service vulnerability due to a memory leak at the fifo_alloc_common function in libavutil/fifo.c (bsc#1186762).\n- CVE-2020-22044: Fixed denial of service vulnerability due to a memory leak in the url_open_dyn_buf_internal function in libavformat/aviobuf.c (bsc#1186763).\n- CVE-2020-22033,CVE-2020-22019: Fixed a heap-based Buffer Overflow Vulnerability at libavfilter/vf_vmafmotion.c in convolution_y_8bit() and in convolution_y_10bit() in libavfilter/vf_vmafmotion.c (bsc#1186615, bsc#1186597).\n- CVE-2020-21688: Fixed a heap-use-after-free in the av_freep function in libavutil/mem.c (bsc#1189348).\n- CVE-2020-21697: Fixed a heap-use-after-free in the mpeg_mux_write_packet function in libavformat/mpegenc.c (bsc#1189350).\n- CVE-2021-38114: Fixed a not checked return value of the init_vlc function (bsc#1189142).\n","status":"published","published":"2021-09-02T12:46:19Z","modified":"2026-02-04T04:30:23.398256Z","updated_at":"2026-11-02T15:53:49.605187Z"},{"id":"USN-3967-1","title":"FFmpeg vulnerabilities","description":"It was discovered that FFmpeg contained multiple security issues when handling\ncertain multimedia files. If a user were tricked into opening a crafted\nmultimedia file, an attacker could cause a denial of service via application\ncrash.\n","status":"published","published":"2019-05-06T17:24:53Z","modified":"2026-04-22T09:56:06.140426Z","updated_at":"2026-11-02T16:58:14.019824Z"}]}}