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Ubuntu 16.04 ESM : FFmpeg vulnerabilities (USN-5167-1)

critical Nessus Plugin ID 183614

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

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

 - FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/lpc.h, which allows a remote malicious user to cause a Denial of Service. (CVE-2020-20445)

 - FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service. (CVE-2020-20446)

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

 - FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aaccoder, which allows a remote malicious user to cause a Denial of Service (CVE-2020-20453)

 - An issue was discovered in function filter_frame in libavfilter/vf_lenscorrection.c in Ffmpeg 4.2.1, allows attackers to cause a Denial of Service or other unspecified impacts due to a division by zero.
 (CVE-2020-20892)

 - A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter.c in FFmpeg 4.2.1 during computation of the denominator of pseudo-normalized correlation R'(0), that could result in disclosure of information. (CVE-2020-20902)

 - 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)

 - A heap-use-after-free in the av_freep function in libavutil/mem.c of FFmpeg 4.2 allows attackers to execute arbitrary code. (CVE-2020-21688)

 - A heap-use-after-free in the mpeg_mux_write_packet function in libavformat/mpegenc.c of FFmpeg 4.2 allows to cause a denial of service (DOS) via a crafted avi file. (CVE-2020-21697)

 - 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 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_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 Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak in avcodec_alloc_context3 at options.c. (CVE-2020-22037)

 - A Denial of Service vulnerability exists in FFmpeg 4.2 idue to a memory leak in the v_frame_alloc function in frame.c. (CVE-2020-22040)

 - A Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak in the av_buffersrc_add_frame_flags function in buffersrc. (CVE-2020-22041)

 - A Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak is affected by: memory leak in the link_filter_inouts function in libavfilter/graphparser.c. (CVE-2020-22042)

 - A Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak in the url_open_dyn_buf_internal function in libavformat/aviobuf.c. (CVE-2020-22044)

 - 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. (CVE-2020-22046)

 - A Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak in the wtvfile_open_sector function in wtvdec.c. (CVE-2020-22049)

 - A Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak in the av_dict_set function in dict.c. (CVE-2020-22054)

 - decode_frame in libavcodec/exr.c in FFmpeg 4.3.1 has an out-of-bounds write because of errors in calculations of when to perform memset zero operations. (CVE-2020-35965)

 - 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)

 - adts_decode_extradata in libavformat/adtsenc.c in FFmpeg 4.4 does not check the init_get_bits return value, which is a necessary step because the second argument to init_get_bits can be crafted.
 (CVE-2021-38171)

 - FFmpeg version (git commit de8e6e67e7523e48bb27ac224a0b446df05e1640) suffers from a an assertion failure at src/libavutil/mathematics.c. (CVE-2021-38291)

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

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-5167-1

Plugin Details

Severity: Critical

ID: 183614

File Name: ubuntu_USN-5167-1.nasl

Version: 1.0

Type: local

Agent: unix

Published: 10/20/2023

Updated: 10/20/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-38171

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:esm, p-cpe:/a:canonical:ubuntu_linux:ffmpeg, p-cpe:/a:canonical:ubuntu_linux:libav-tools, p-cpe:/a:canonical:ubuntu_linux:libavcodec-dev, p-cpe:/a:canonical:ubuntu_linux:libavcodec-extra, p-cpe:/a:canonical:ubuntu_linux:libavcodec-ffmpeg-extra56, p-cpe:/a:canonical:ubuntu_linux:libavcodec-ffmpeg56, p-cpe:/a:canonical:ubuntu_linux:libavdevice-dev, p-cpe:/a:canonical:ubuntu_linux:libavdevice-ffmpeg56, p-cpe:/a:canonical:ubuntu_linux:libavfilter-dev, p-cpe:/a:canonical:ubuntu_linux:libavfilter-ffmpeg5, p-cpe:/a:canonical:ubuntu_linux:libavformat-dev, p-cpe:/a:canonical:ubuntu_linux:libavformat-ffmpeg56, p-cpe:/a:canonical:ubuntu_linux:libavresample-dev, p-cpe:/a:canonical:ubuntu_linux:libavresample-ffmpeg2, p-cpe:/a:canonical:ubuntu_linux:libavutil-dev, p-cpe:/a:canonical:ubuntu_linux:libavutil-ffmpeg54, p-cpe:/a:canonical:ubuntu_linux:libpostproc-dev, p-cpe:/a:canonical:ubuntu_linux:libpostproc-ffmpeg53, p-cpe:/a:canonical:ubuntu_linux:libswresample-dev, p-cpe:/a:canonical:ubuntu_linux:libswresample-ffmpeg1, p-cpe:/a:canonical:ubuntu_linux:libswscale-dev, p-cpe:/a:canonical:ubuntu_linux:libswscale-ffmpeg3

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/13/2022

Vulnerability Publication Date: 1/4/2021

Reference Information

CVE: CVE-2020-20445, CVE-2020-20446, CVE-2020-20451, CVE-2020-20453, CVE-2020-20892, CVE-2020-20902, CVE-2020-21041, CVE-2020-21688, CVE-2020-21697, CVE-2020-22016, 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, CVE-2020-22046, CVE-2020-22049, CVE-2020-22054, CVE-2020-35965, CVE-2021-3566, CVE-2021-38114, CVE-2021-38171, CVE-2021-38291

USN: 5167-1