Prior to ffmpeg version 4.3, the tty demuxer did not have a 'read_probe' function assigned to it. By crafting a legitimate "ffconcat" file that references an image, followed by a file the triggers the tty demuxer, the contents of the second file will be copied into the output file verbatim (as long as the `-vcodec copy` option is passed to ffmpeg).

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-680631 advisory.

    Prior to ffmpeg version 4.3, the tty demuxer did not have a 'read_probe' function assigned to it. By     crafting a legitimate ffconcat file that references an image, followed by a file the triggers the tty     demuxer, the contents of the second file will be copied into the output file verbatim (as long as the     `-vcodec copy` option is passed to ffmpeg).

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5167-1 advisory.

    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)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:0005-1 advisory.

    - CVE-2022-3109: Fixed null pointer dereference in vp3_decode_frame() (bsc#1206442).
    - CVE-2020-22042: Fixed a denial of service vulnerability led by a memory leak in the link_filter_inouts     function in libavfilter/graphparser.c. (bsc#1186761)
    - CVE-2021-38094: Fixed an integer overflow vulnerability in function filter_sobel in     libavfilter/vf_convolution.c (bsc#1190735).
    - CVE-2021-38093: Fixed an integer Overflow vulnerability in function filter_robert in     libavfilter/vf_convolution.c (bsc#1190734).
    - CVE-2021-38092: Fixed an Integer Overflow vulnerability in function filter_prewitt in     libavfilter/vf_convolution.c (bsc#1190733).
    - CVE-2020-22037: Fixed a denial of service vulnerability due to a memory leak in avcodec_alloc_context3     at options.c (bsc#1186756).
    - CVE-2021-3566: Fixed an exposure of sensitive information on ffmpeg version prior to 4.3 (bsc#1189166).
    - CVE-2020-35965: Fixed an out-of-bounds write in decode_frame in libavcodec/exr.c (bsc#1187852).
    - CVE-2020-20892: Fixed a division by zero in function filter_frame in libavfilter/vf_lenscorrection.c     (bsc#1190719).
    - CVE-2020-20891: Fixed a buffer overflow vulnerability in function config_input in libavfilter/vf_gblur.c     (bsc#1190718).
    - CVE-2020-20895: Fixed a buffer overflow vulnerability in function filter_vertically_##name in     libavfilter/vf_avgblur.c (bsc#1190722).
    - CVE-2020-20896: Fixed a NULL pointer dereference in function latm_write_packet in libavformat/latmenc.c     (bsc#1190723).
    - CVE-2020-20899: Fixed a buffer overflow vulnerability in function config_props in libavfilter/vf_bwdif.c     (bsc#1190726).
    - CVE-2020-20902: Fixed an out-of-bounds read vulnerability in long_term_filter function in     g729postfilter.c (bsc#1190729).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3521-1 advisory.

    - CVE-2021-3566: Fixed information leak (bsc#1189166).
    - CVE-2021-38093: Fixed integer overflow vulnerability in filter_robert() (bsc#1190734)
    - CVE-2021-38092: Fixed integer overflow vulnerability in filter_prewitt() (bsc#1190733)
    - CVE-2021-38094: Fixed integer overflow vulnerability in filter_sobel() (bsc#1190735)
    - CVE-2020-22037: Fixed denial of service vulnerability caused by memory leak in avcodec_alloc_context3()     (bsc#1186756)
    - CVE-2020-35965: Fixed out-of-bounds write in decode_frame() (bsc#1187852)
    - CVE-2020-20892: Fixed an issue with filter_frame() (bsc#1190719)
    - CVE-2020-20891: Fixed a buffer overflow vulnerability in config_input() (bsc#1190718)
    - CVE-2020-20895: Fixed a buffer overflow vulnerability in function filter_vertically_##name (bsc#1190722)
    - CVE-2020-20896: Fixed an issue with latm_write_packet() (bsc#1190723)
    - CVE-2020-20899: Fixed a buffer overflow vulnerability in config_props() (bsc#1190726)
    - CVE-2020-20902: Fixed an out-of-bounds read vulnerabilit long_term_filter() (bsc#1190729)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:3521-1 advisory.

    - CVE-2021-3566: Fixed information leak (bsc#1189166).
    - CVE-2021-38093: Fixed integer overflow vulnerability in filter_robert() (bsc#1190734)
    - CVE-2021-38092: Fixed integer overflow vulnerability in filter_prewitt() (bsc#1190733)
    - CVE-2021-38094: Fixed integer overflow vulnerability in filter_sobel() (bsc#1190735)
    - CVE-2020-22037: Fixed denial of service vulnerability caused by memory leak in avcodec_alloc_context3()     (bsc#1186756)
    - CVE-2020-35965: Fixed out-of-bounds write in decode_frame() (bsc#1187852)
    - CVE-2020-20892: Fixed an issue with filter_frame() (bsc#1190719)
    - CVE-2020-20891: Fixed a buffer overflow vulnerability in config_input() (bsc#1190718)
    - CVE-2020-20895: Fixed a buffer overflow vulnerability in function filter_vertically_##name (bsc#1190722)
    - CVE-2020-20896: Fixed an issue with latm_write_packet() (bsc#1190723)
    - CVE-2020-20899: Fixed a buffer overflow vulnerability in config_props() (bsc#1190726)
    - CVE-2020-20902: Fixed an out-of-bounds read vulnerabilit long_term_filter() (bsc#1190729)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2742 advisory.

  - Buffer Overflow vulnerability exists in FFmpeg 4.1 via apng_do_inverse_blend in libavcodec/pngenc.c, which     could let a remote malicious user cause a Denial of Service (CVE-2020-21041)

  - Buffer Overflow vulnerability in FFmpeg 4.2 in mov_write_video_tag due to the out of bounds in     libavformat/movenc.c, which could let a remote malicious user obtain sensitive information, cause a Denial     of Service, or execute arbitrary code. (CVE-2020-22015)

  - A heap-based Buffer Overflow vulnerability in FFmpeg 4.2 at libavcodec/get_bits.h when writing .mov files,     which might lead to memory corruption and other potential consequences. (CVE-2020-22016)

  - Buffer Overflow vulnerability in FFmpeg 4.2 in the build_diff_map function in libavfilter/vf_fieldmatch.c,     which could let a remote malicious user cause a Denial of Service. (CVE-2020-22020)

  - Buffer Overflow vulnerability in FFmpeg 4.2 at filter_edges function in libavfilter/vf_yadif.c, which     could let a remote malicious user cause a Denial of Service. (CVE-2020-22021)

  - 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 vulnerabililty exists in FFmpeg 4.2 in filter_frame at     libavfilter/vf_bitplanenoise.c, which might lead to memory corruption and other potential consequences.
    (CVE-2020-22023)

  - 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)

  - Buffer Overflow vulnerability exists in FFmpeg 4.2 in the config_input function at     libavfilter/af_tremolo.c, which could let a remote malicious user cause a Denial of Service.
    (CVE-2020-22026)

  - Buffer Overflow vulnerability exists in FFmpeg 4.2 in filter_vertically_8 at libavfilter/vf_avgblur.c,     which could cause a remote Denial of Service. (CVE-2020-22028)

  - A Heap-based Buffer Overflow vulnerability exists in FFmpeg 4.2 at libavfilter/vf_w3fdif.c in     filter16_complex_low, which might lead to memory corruption and other potential consequences.
    (CVE-2020-22031)

  - A heap-based Buffer Overflow vulnerability exists FFmpeg 4.2 at libavfilter/vf_edgedetect.c in     gaussian_blur, which might lead to memory corruption and other potential consequences. (CVE-2020-22032)

  - A heap-based Buffer Overflow vulnerability exists in FFmpeg 4.2 in filter_intra at libavfilter/vf_bwdif.c,     which might lead to memory corruption and other potential consequences. (CVE-2020-22036)

  - Prior to ffmpeg version 4.3, the tty demuxer did not have a 'read_probe' function assigned to it. By     crafting a legitimate ffconcat file that references an image, followed by a file the triggers the tty     demuxer, the contents of the second file will be copied into the output file verbatim (as long as the     `-vcodec copy` option is passed to ffmpeg). (CVE-2021-3566)

  - libavcodec/dnxhddec.c in FFmpeg 4.4 does not check the return value of the init_vlc function, a similar     issue to CVE-2013-0868. (CVE-2021-38114)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
267742	Unity Linux 20.1070e Security Update: ffmpeg (UTSA-2025-680631)	Nessus	Unity Linux Local Security Checks	medium
183614	Ubuntu 16.04 ESM : FFmpeg vulnerabilities (USN-5167-1)	Nessus	Ubuntu Local Security Checks	critical
169467	SUSE SLES15: libavcodec-devel / libavcodec57 / libavcodec57-32bit / etc (SUSE-SU-2023:0005-1)	Nessus	SuSE Local Security Checks	high
154620	SUSE SLED15: ffmpeg / libavcodec-devel / libavcodec57 / libavdevice57 / etc (SUSE-SU-2021:3521-1)	Nessus	SuSE Local Security Checks	high
154611	openSUSE 15 Security Update : ffmpeg (openSUSE-SU-2021:3521-1)	Nessus	SuSE Local Security Checks	high
152737	Debian DLA-2742-1 : ffmpeg - LTS security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2021-3566

medium

Tenable Plugins

medium

critical

high

high

high

high