Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM : FFmpeg vulnerabilities (USN-6430-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-6430-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(182982);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id(
    "CVE-2020-22024",
    "CVE-2020-22039",
    "CVE-2020-22040",
    "CVE-2020-22043",
    "CVE-2020-22051",
    "CVE-2021-28429"
  );
  script_xref(name:"USN", value:"6430-1");

  script_name(english:"Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM : FFmpeg vulnerabilities (USN-6430-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-6430-1 advisory.

    It was discovered that FFmpeg did not properly handle certain inputs in vf_lagfun.c, resulting in a buffer
    overflow vulnerability. An attacker could possibly use this issue to cause a denial of service via
    application crash. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-22024)

    It was discovered that FFmpeg incorrectly managed memory in avienc.c, resulting in a memory leak. An
    attacker could possibly use this issue to cause a denial of service via application crash.
    (CVE-2020-22039)

    It was discovered that FFmpeg incorrectly handled certain files due to a memory leak in frame.c. An
    attacker could possibly use this issue to cause a denial of service via application crash. This issue
    affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-22040)

    It was discovered that FFmpeg incorrectly handled certain files due to a memory leak in fifo.c. An
    attacker could possibly use this issue to cause a denial of service via application crash.
    (CVE-2020-22043)

    It was discovered that FFmpeg incorrectly handled certain files due to a memory leak in vf_tile.c. If a
    user or automated system were tricked into processing a specially crafted MOV file, an attacker could
    possibly use this issue to cause a denial of service. (CVE-2020-22051)

    It was discovered that FFmpeg incorrectly handled certain MOV files in timecode.c, leading to an integer
    overflow. An attacker could possibly use this issue to cause a denial of service using a crafted MOV file.
    This issue only affected Ubuntu 16.04 LTS. (CVE-2021-28429)

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.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-6430-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/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:N/I:N/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-2020-22051");

  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:"2021/05/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/10/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/10/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:esm");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:esm");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:esm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ffmpeg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libav-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavcodec-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavcodec-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavcodec-extra57");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavcodec-extra58");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavcodec-ffmpeg-extra56");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavcodec-ffmpeg56");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavcodec57");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavcodec58");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavdevice-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavdevice-ffmpeg56");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavdevice57");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavdevice58");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavfilter-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavfilter-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavfilter-extra6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavfilter-extra7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavfilter-ffmpeg5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavfilter6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavfilter7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavformat-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavformat-ffmpeg56");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavformat57");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavformat58");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavresample-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavresample-ffmpeg2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavresample3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavresample4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavutil-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavutil-ffmpeg54");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavutil55");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavutil56");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpostproc-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpostproc-ffmpeg53");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpostproc54");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpostproc55");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libswresample-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libswresample-ffmpeg1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libswresample2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libswresample3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libswscale-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libswscale-ffmpeg3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libswscale4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libswscale5");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Ubuntu Local Security Checks");

  script_copyright(english:"Ubuntu Security Notice (C) 2023-2024 Canonical, Inc. / NASL script (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "ubuntu_pro_sub_detect.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('16.04' >< os_release || '18.04' >< os_release || '20.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04 / 20.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);
var ubuntu_pro_detected = get_kb_item('Host/Ubuntu/Pro/Services/esm-apps');
ubuntu_pro_detected = !empty_or_null(ubuntu_pro_detected);

var pro_caveat_needed = FALSE;

var pkgs = [
    {'osver': '16.04', 'pkgname': 'ffmpeg', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libav-tools', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavcodec-dev', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavcodec-extra', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavcodec-ffmpeg-extra56', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavcodec-ffmpeg56', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavdevice-dev', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavdevice-ffmpeg56', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavfilter-dev', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavfilter-ffmpeg5', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavformat-dev', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavformat-ffmpeg56', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavresample-dev', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavresample-ffmpeg2', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavutil-dev', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libavutil-ffmpeg54', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libpostproc-dev', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libpostproc-ffmpeg53', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libswresample-dev', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libswresample-ffmpeg1', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libswscale-dev', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libswscale-ffmpeg3', 'pkgver': '7:2.8.17-0ubuntu0.1+esm6', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'ffmpeg', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavcodec-dev', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavcodec-extra', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavcodec-extra57', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavcodec57', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavdevice-dev', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavdevice57', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavfilter-dev', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavfilter-extra', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavfilter-extra6', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavfilter6', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavformat-dev', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavformat57', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavresample-dev', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavresample3', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavutil-dev', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libavutil55', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libpostproc-dev', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libpostproc54', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libswresample-dev', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libswresample2', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libswscale-dev', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libswscale4', 'pkgver': '7:3.4.11-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'ffmpeg', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavcodec-dev', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavcodec-extra', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavcodec-extra58', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavcodec58', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavdevice-dev', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavdevice58', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavfilter-dev', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavfilter-extra', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavfilter-extra7', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavfilter7', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavformat-dev', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavformat58', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavresample-dev', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavresample4', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavutil-dev', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libavutil56', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libpostproc-dev', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libpostproc55', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libswresample-dev', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libswresample3', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libswscale-dev', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE},
    {'osver': '20.04', 'pkgname': 'libswscale5', 'pkgver': '7:4.2.7-0ubuntu0.1+esm2', 'ubuntu_pro': TRUE}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  var pro_required = NULL;
  if (!empty_or_null(package_array['ubuntu_pro'])) pro_required = package_array['ubuntu_pro'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) {
        flag++;
        if (!ubuntu_pro_detected && !pro_caveat_needed) pro_caveat_needed = pro_required;
    }
  }
}

if (flag)
{
  var extra = '';
  if (pro_caveat_needed) {
    extra += 'NOTE: This vulnerability check contains fixes that apply to packages only \n';
    extra += 'available in Ubuntu ESM repositories. Access to these package security updates \n';
    extra += 'require an Ubuntu Pro subscription.\n\n';
  }
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'ffmpeg / libav-tools / libavcodec-dev / libavcodec-extra / etc');
}