CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
92.5%
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.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-2742. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(152737);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/04");
script_cve_id(
"CVE-2020-21041",
"CVE-2020-22015",
"CVE-2020-22016",
"CVE-2020-22020",
"CVE-2020-22021",
"CVE-2020-22022",
"CVE-2020-22023",
"CVE-2020-22025",
"CVE-2020-22026",
"CVE-2020-22028",
"CVE-2020-22031",
"CVE-2020-22032",
"CVE-2020-22036",
"CVE-2021-3566",
"CVE-2021-38114"
);
script_name(english:"Debian DLA-2742-1 : ffmpeg - LTS security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
script_set_attribute(attribute:"description", value:
"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.");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/ffmpeg");
script_set_attribute(attribute:"see_also", value:"https://www.debian.org/lts/security/2021/dla-2742");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-21041");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-22015");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-22016");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-22020");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-22021");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-22022");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-22023");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-22025");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-22026");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-22028");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-22031");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-22032");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-22036");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-3566");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-38114");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/ffmpeg");
script_set_attribute(attribute:"solution", value:
"Upgrade the ffmpeg packages.
For Debian 9 stretch, these problems have been fixed in version 7");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-22036");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/05/24");
script_set_attribute(attribute:"patch_publication_date", value:"2021/08/14");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/08/23");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ffmpeg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ffmpeg-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libav-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec-extra");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec-extra57");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec57");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavdevice-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavdevice57");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavfilter-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavfilter-extra");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavfilter-extra6");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavfilter6");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavformat-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavformat57");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavresample-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavresample3");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavutil-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavutil55");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpostproc-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpostproc54");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswresample-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswresample2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswscale-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswscale4");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include('audit.inc');
include('debian_package.inc');
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
var release = get_kb_item('Host/Debian/release');
if ( isnull(release) ) audit(AUDIT_OS_NOT, 'Debian');
var release = chomp(release);
if (! preg(pattern:"^(9)\.[0-9]+", string:release)) audit(AUDIT_OS_NOT, 'Debian 9.0', 'Debian ' + release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);
var pkgs = [
{'release': '9.0', 'prefix': 'ffmpeg', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'ffmpeg-doc', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libav-tools', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavcodec-dev', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavcodec-extra', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavcodec-extra57', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavcodec57', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavdevice-dev', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavdevice57', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavfilter-dev', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavfilter-extra', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavfilter-extra6', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavfilter6', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavformat-dev', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavformat57', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavresample-dev', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavresample3', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavutil-dev', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libavutil55', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libpostproc-dev', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libpostproc54', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libswresample-dev', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libswresample2', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libswscale-dev', 'reference': '7:3.2.15-0+deb9u3'},
{'release': '9.0', 'prefix': 'libswscale4', 'reference': '7:3.2.15-0+deb9u3'}
];
var flag = 0;
foreach package_array ( pkgs ) {
var release = NULL;
var prefix = NULL;
var reference = NULL;
if (!empty_or_null(package_array['release'])) release = package_array['release'];
if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (release && prefix && reference) {
if (deb_check(release:release, prefix:prefix, reference:reference)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : deb_report_get()
);
exit(0);
}
else
{
var tested = deb_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'ffmpeg / ffmpeg-doc / libav-tools / libavcodec-dev / libavcodec-extra / etc');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-21041
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22015
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22016
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22020
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22021
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22022
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22023
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22025
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22026
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22028
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22031
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22032
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22036
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3566
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38114
packages.debian.org/source/stretch/ffmpeg
security-tracker.debian.org/tracker/CVE-2020-21041
security-tracker.debian.org/tracker/CVE-2020-22015
security-tracker.debian.org/tracker/CVE-2020-22016
security-tracker.debian.org/tracker/CVE-2020-22020
security-tracker.debian.org/tracker/CVE-2020-22021
security-tracker.debian.org/tracker/CVE-2020-22022
security-tracker.debian.org/tracker/CVE-2020-22023
security-tracker.debian.org/tracker/CVE-2020-22025
security-tracker.debian.org/tracker/CVE-2020-22026
security-tracker.debian.org/tracker/CVE-2020-22028
security-tracker.debian.org/tracker/CVE-2020-22031
security-tracker.debian.org/tracker/CVE-2020-22032
security-tracker.debian.org/tracker/CVE-2020-22036
security-tracker.debian.org/tracker/CVE-2021-3566
security-tracker.debian.org/tracker/CVE-2021-38114
security-tracker.debian.org/tracker/source-package/ffmpeg
www.debian.org/lts/security/2021/dla-2742
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
92.5%