CVE-2020-20451

FFmpeg is a complete and free Internet live audio and video broadcasting solution for Linux/Unix. It also includes a digital VCR. It can encode in real time in many formats including MPEG1 audio and video, MPEG4, h263, ac3, asf, avi, real, mjpeg, and flash.

Security Fix(es):

FFmpeg 4.2 is affected by null pointer dereference passed as argument to libavformat/aviobuf.c, which could cause a Denial of Service.(CVE-2020-20450)

Denial of Service issue in FFmpeg 4.2 due to resource management errors via fftools/cmdutils.c.(CVE-2020-20451)

A heap-based Buffer Overflow vulnerability exists in FFmpeg 4.2 at ff_fill_rectangle in libavfilter/drawutils.c, which might lead to memory corruption and other potential consequences.(CVE-2020-22017)

A heap-based Buffer Overflow vulnerability exists in FFmpeg 4.2 in filter_frame at libavfilter/vf_fieldorder.c, which might lead to memory corruption and other potential consequences.(CVE-2020-22022)

A heap-based Buffer Overflow vulnerability exists in gaussian_blur at libavfilter/vf_edgedetect.c, which might lead to memory corruption and other potential consequences.(CVE-2020-22025)

A heap-based Buffer Overflow vulnerability exists in FFmpeg 4.2 at libavfilter/vf_colorconstancy.c: in slice_get_derivative, which crossfade_samples_fltp, which might lead to memory corruption and other potential consequences.(CVE-2020-22029)

A heap-based Buffer Overflow vulnerability exists in FFmpeg 4.2 at libavfilter/af_afade.c in crossfade_samples_fltp, which might lead to memory corruption and other potential consequences.(CVE-2020-22030)

FFmpeg is a complete and free Internet live audio and video broadcasting solution for Linux/Unix. It also includes a digital VCR. It can encode in real time in many formats including MPEG1 audio and video, MPEG4, h263, ac3, asf, avi, real, mjpeg, and flash.

Security Fix(es):

Denial of Service issue in FFmpeg 4.2 due to resource management errors via fftools/cmdutils.c.(CVE-2020-20451)

A heap-based Buffer Overflow vulnerability exists in FFmpeg 4.2 at ff_fill_rectangle in libavfilter/drawutils.c, which might lead to memory corruption and other potential consequences.(CVE-2020-22017)

A heap-based Buffer Overflow vulnerability exists in gaussian_blur at libavfilter/vf_edgedetect.c, which might lead to memory corruption and other potential consequences.(CVE-2020-22025)

A heap-based Buffer Overflow vulnerability exists in FFmpeg 4.2 at libavfilter/vf_colorconstancy.c: in slice_get_derivative, which crossfade_samples_fltp, which might lead to memory corruption and other potential consequences.(CVE-2020-22029)

A heap-based Buffer Overflow vulnerability exists in FFmpeg 4.2 at libavfilter/af_afade.c in crossfade_samples_fltp, which might lead to memory corruption and other potential consequences.(CVE-2020-22030)

Denial of Service issue in FFmpeg 4.2 due to resource management errors via fftools/cmdutils.c.

This update for ffmpeg fixes the following issues:

• CVE-2020-13904: Fixed use-after-free via a crafted EXTINF duration in an m3u8 file (bsc#1172640).
• CVE-2020-21041: Fixed buffer overflow vulnerability via apng_do_inverse_blend in libavcodec/pngenc.c (bsc#1186406).
• CVE-2019-17539: Fixed NULL pointer dereference in avcodec_open2 in libavcodec/utils.c (bsc# 1154065).
• CVE-2020-22026: Fixed buffer overflow vulnerability in config_input() at libavfilter/af_tremolo.c (bsc#1186583).
• CVE-2020-22021: Fixed buffer overflow vulnerability in filter_edges function in libavfilter/vf_yadif.c (bsc#1186586).
• CVE-2020-22020: Fixed buffer overflow vulnerability in build_diff_map() in libavfilter/vf_fieldmatch.c (bsc#1186587).
• CVE-2020-22015: Fixed buffer overflow vulnerability in mov_write_video_tag() due to the out of bounds in libavformat/movenc.c (bsc#1186596).
• CVE-2020-22016: Fixed a heap-based Buffer Overflow vulnerability at libavcodec/get_bits.h when writing .mov files (bsc#1186598).
• CVE-2020-22017: Fixed a heap-based Buffer Overflow vulnerability in ff_fill_rectangle() in libavfilter/drawutils.c (bsc#1186600).
• CVE-2020-22022: Fixed a heap-based Buffer Overflow vulnerability in filter_frame at libavfilter/vf_fieldorder.c (bsc#1186603).
• CVE-2020-22023: Fixed a heap-based Buffer Overflow vulnerability in filter_frame at libavfilter/vf_bitplanenoise.c (bsc#1186604)
• CVE-2020-22025: Fixed a heap-based Buffer Overflow vulnerability in gaussian_blur at libavfilter/vf_edgedetect.c (bsc#1186605).
• CVE-2020-22031: Fixed a heap-based Buffer Overflow vulnerability at libavfilter/vf_w3fdif.c in filter16_complex_low() (bsc#1186613).
• CVE-2020-22032: Fixed a heap-based Buffer Overflow vulnerability at libavfilter/vf_edgedetect.c in gaussian_blur() (bsc#1186614).
• CVE-2020-22034: Fixed a heap-based Buffer Overflow vulnerability at libavfilter/vf_floodfill.c (bsc#1186616).
• CVE-2020-20451: Fixed denial of service issue due to resource management errors via fftools/cmdutils.c (bsc#1186658).
• CVE-2020-20448: Fixed divide by zero issue via libavcodec/ratecontrol.c (bsc#1186660).
• 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).
• CVE-2020-22039: Fixed denial of service vulnerability due to a memory leak in the inavi_add_ientry function (bsc#1186758).
• 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).
• 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).
• 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).

This update for ffmpeg fixes the following issues:

• CVE-2020-13904: Fixed use-after-free via a crafted EXTINF duration in an m3u8 file (bsc#1172640).
• CVE-2020-21041: Fixed buffer overflow vulnerability via apng_do_inverse_blend in libavcodec/pngenc.c (bsc#1186406).
• CVE-2019-17539: Fixed NULL pointer dereference in avcodec_open2 in libavcodec/utils.c (bsc# 1154065).
• CVE-2020-22026: Fixed buffer overflow vulnerability in config_input() at libavfilter/af_tremolo.c (bsc#1186583).
• CVE-2020-22021: Fixed buffer overflow vulnerability in filter_edges function in libavfilter/vf_yadif.c (bsc#1186586).
• CVE-2020-22020: Fixed buffer overflow vulnerability in build_diff_map() in libavfilter/vf_fieldmatch.c (bsc#1186587).
• CVE-2020-22015: Fixed buffer overflow vulnerability in mov_write_video_tag() due to the out of bounds in libavformat/movenc.c (bsc#1186596).
• CVE-2020-22016: Fixed a heap-based Buffer Overflow vulnerability at libavcodec/get_bits.h when writing .mov files (bsc#1186598).
• CVE-2020-22017: Fixed a heap-based Buffer Overflow vulnerability in ff_fill_rectangle() in libavfilter/drawutils.c (bsc#1186600).
• CVE-2020-22022: Fixed a heap-based Buffer Overflow vulnerability in filter_frame at libavfilter/vf_fieldorder.c (bsc#1186603).
• CVE-2020-22023: Fixed a heap-based Buffer Overflow vulnerability in filter_frame at libavfilter/vf_bitplanenoise.c (bsc#1186604)
• CVE-2020-22025: Fixed a heap-based Buffer Overflow vulnerability in gaussian_blur at libavfilter/vf_edgedetect.c (bsc#1186605).
• CVE-2020-22031: Fixed a heap-based Buffer Overflow vulnerability at libavfilter/vf_w3fdif.c in filter16_complex_low() (bsc#1186613).
• CVE-2020-22032: Fixed a heap-based Buffer Overflow vulnerability at libavfilter/vf_edgedetect.c in gaussian_blur() (bsc#1186614).
• CVE-2020-22034: Fixed a heap-based Buffer Overflow vulnerability at libavfilter/vf_floodfill.c (bsc#1186616).
• CVE-2020-20451: Fixed denial of service issue due to resource management errors via fftools/cmdutils.c (bsc#1186658).
• CVE-2020-20448: Fixed divide by zero issue via libavcodec/ratecontrol.c (bsc#1186660).
• 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).
• CVE-2020-22039: Fixed denial of service vulnerability due to a memory leak in the inavi_add_ientry function (bsc#1186758).
• 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).
• 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).
• 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).

This update for ffmpeg fixes the following issues:

• CVE-2019-9721: Fixed a denial of service in the subtitle decoder in handle_open_brace from libavcodec/htmlsubtitles.c (bsc#1129714).
• 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).
• 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).
• 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).
• 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).
• CVE-2020-13904: Fixed use-after-free via a crafted EXTINF duration in an m3u8 file (bsc#1172640).
• CVE-2020-21041: Fixed buffer overflow vulnerability via apng_do_inverse_blend in libavcodec/pngenc.c (bsc#1186406).
• CVE-2019-17539: Fixed NULL pointer dereference in avcodec_open2 in libavcodec/utils.c (bsc# 1154065).
• CVE-2020-22026: Fixed buffer overflow vulnerability in config_input() at libavfilter/af_tremolo.c (bsc#1186583).
• CVE-2020-22021: Fixed buffer overflow vulnerability in filter_edges function in libavfilter/vf_yadif.c (bsc#1186586).
• CVE-2020-22020: Fixed buffer overflow vulnerability in build_diff_map() in libavfilter/vf_fieldmatch.c (bsc#1186587).
• CVE-2020-22015: Fixed buffer overflow vulnerability in mov_write_video_tag() due to the out of bounds in libavformat/movenc.c (bsc#1186596).
• CVE-2020-22016: Fixed a heap-based Buffer Overflow vulnerability at libavcodec/get_bits.h when writing .mov files (bsc#1186598).
• CVE-2020-22017: Fixed a heap-based Buffer Overflow vulnerability in ff_fill_rectangle() in libavfilter/drawutils.c (bsc#1186600).
• CVE-2020-22022: Fixed a heap-based Buffer Overflow vulnerability in filter_frame at libavfilter/vf_fieldorder.c (bsc#1186603).
• CVE-2020-22023: Fixed a heap-based Buffer Overflow vulnerability in filter_frame at libavfilter/vf_bitplanenoise.c (bsc#1186604)
• CVE-2020-22025: Fixed a heap-based Buffer Overflow vulnerability in gaussian_blur at libavfilter/vf_edgedetect.c (bsc#1186605).
• CVE-2020-22031: Fixed a heap-based Buffer Overflow vulnerability at libavfilter/vf_w3fdif.c in filter16_complex_low() (bsc#1186613).
• CVE-2020-22032: Fixed a heap-based Buffer Overflow vulnerability at libavfilter/vf_edgedetect.c in gaussian_blur() (bsc#1186614).
• CVE-2020-22034: Fixed a heap-based Buffer Overflow vulnerability at libavfilter/vf_floodfill.c (bsc#1186616).
• CVE-2020-20451: Fixed denial of service issue due to resource management errors via fftools/cmdutils.c (bsc#1186658).
• CVE-2020-20448: Fixed divide by zero issue via libavcodec/ratecontrol.c (bsc#1186660).
• 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).
• CVE-2020-22039: Fixed denial of service vulnerability due to a memory leak in the inavi_add_ientry function (bsc#1186758).
• 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).
• 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).
• 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).
• CVE-2020-21688: Fixed a heap-use-after-free in the av_freep function in libavutil/mem.c (bsc#1189348).
• CVE-2020-21697: Fixed a heap-use-after-free in the mpeg_mux_write_packet function in libavformat/mpegenc.c (bsc#1189350).
• CVE-2021-38114: Fixed a not checked return value of the init_vlc function (bsc#1189142).

It was discovered that FFmpeg did not properly verify certain input when processing video and audio files. An attacker could possibly use this to send specially crafted input to the application, force a division by zero, and cause a denial of service (application crash). (CVE-2020-20445, CVE-2020-20446, CVE-2020-20453, CVE-2020-20892)

It was discovered that FFmpeg did not properly perform certain bit shift and memory operations. An attacker could possibly use this issue to expose sensitive information. (CVE-2020-20902)

It was discovered that FFmpeg did not properly perform memory management operations in various of its functions. An attacker could possibly use this issue to send specially crafted input to the application and cause a denial of service (application crash) or execute arbitrary code. (CVE-2020-21041, CVE-2020-20451, CVE-2020-21688, CVE-2020-21697, CVE-2020-22020, CVE-2020-22021, CVE-2020-22022, CVE-2020-22025, CVE-2020-22031, CVE-2020-22032, CVE-2020-22037, CVE-2020-22040, CVE-2020-22041, CVE-2020-22042, CVE-2020-22044)

It was discovered that FFmpeg did not properly perform memory management operations in various of its functions. An attacker could possibly use this issue to send specially crafted input to the application and cause a denial of service (application crash) or execute arbitrary code. (CVE-2020-22016, CVE-2020-22046, CVE-2020-22049, CVE-2020-22054)

It was discovered that FFmpeg did not properly perform memory management operations in various of its functions. An attacker could possibly use this issue to send specially crafted input to the application and cause a denial of service (application crash) or execute arbitrary code. (CVE-2020-35965)

It was discovered that FFmpeg did not properly handle data assigned to the tty demuxer. An attacker could possibly use this issue to send specially crafted input to the application and expose sensitive information. (CVE-2021-3566)

It was discovered that FFmpeg did not perform checks on function return values when encoding and formatting input video and audio files. An attacker could possibly use this issue to cause a denial of service (application crash) or execute arbitrary code. (CVE-2021-38114, CVE-2021-38171)

It was discovered that FFmpeg did not properly sanitize function returned data when calculating frame duration values. An attacker could possibly use this issue to cause an assertion failure and then cause a denial of service (application crash). (CVE-2021-38291)