Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : FFmpeg vulnerabilities (USN-8671-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8671-1. 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(365453);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/13");

  script_cve_id("CVE-2026-66036", "CVE-2026-66038", "CVE-2026-66039");
  script_xref(name:"IAVB", value:"2026-B-0227");
  script_xref(name:"USN", value:"8671-1");

  script_name(english:"Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : FFmpeg vulnerabilities (USN-8671-1)");

  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 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by
multiple vulnerabilities as referenced in the USN-8671-1 advisory.

    Adrian Junge was discovered that FFmpeg incorrectly handled certain media files. An attacker could
    possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-66036,
    CVE-2026-66039)

    Adrian Junge discovered that FFmpeg incorrectly handled certain media files. An attacker could possibly
    use this issue to obtain sensitive information. (CVE-2026-66038)

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-8671-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-66036");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-66039");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/07/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  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: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-extra60");
  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:libavcodec60");
  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:libavdevice60");
  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-extra9");
  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:libavfilter9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavformat-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavformat-extra58");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libavformat-extra60");
  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:libavformat60");
  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: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:libavutil58");
  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:libpostproc57");
  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:libswresample4");
  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:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libswscale7");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2026 Canonical, Inc. / NASL script (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.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 (! ('18.04' >< os_release || '20.04' >< os_release || '22.04' >< os_release || '24.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 18.04 / 20.04 / 22.04 / 24.04', '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 pkgs = [
    {'osver': '18.04', 'pkgname': 'ffmpeg', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '18.04', 'pkgname': 'libavcodec-extra', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '18.04', 'pkgname': 'libavcodec-extra57', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '18.04', 'pkgname': 'libavcodec57', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '18.04', 'pkgname': 'libavdevice57', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '18.04', 'pkgname': 'libavfilter-extra', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '18.04', 'pkgname': 'libavfilter-extra6', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '18.04', 'pkgname': 'libavfilter6', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '18.04', 'pkgname': 'libavformat57', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '18.04', 'pkgname': 'libavresample3', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '18.04', 'pkgname': 'libavutil55', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '18.04', 'pkgname': 'libpostproc54', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '18.04', 'pkgname': 'libswresample2', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '18.04', 'pkgname': 'libswscale4', 'pkgver': '7:3.4.11-0ubuntu0.1+esm13'},
    {'osver': '20.04', 'pkgname': 'ffmpeg', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '20.04', 'pkgname': 'libavcodec-extra', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '20.04', 'pkgname': 'libavcodec-extra58', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '20.04', 'pkgname': 'libavcodec58', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '20.04', 'pkgname': 'libavdevice58', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '20.04', 'pkgname': 'libavfilter-extra', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '20.04', 'pkgname': 'libavfilter-extra7', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '20.04', 'pkgname': 'libavfilter7', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '20.04', 'pkgname': 'libavformat58', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '20.04', 'pkgname': 'libavresample4', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '20.04', 'pkgname': 'libavutil56', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '20.04', 'pkgname': 'libpostproc55', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '20.04', 'pkgname': 'libswresample3', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '20.04', 'pkgname': 'libswscale5', 'pkgver': '7:4.2.7-0ubuntu0.1+esm14'},
    {'osver': '22.04', 'pkgname': 'ffmpeg', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libavcodec-extra', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libavcodec-extra58', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libavcodec58', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libavdevice58', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libavfilter-extra', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libavfilter-extra7', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libavfilter7', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libavformat-extra', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libavformat-extra58', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libavformat58', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libavutil56', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libpostproc55', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libswresample3', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '22.04', 'pkgname': 'libswscale5', 'pkgver': '7:4.4.2-0ubuntu0.22.04.1+esm13'},
    {'osver': '24.04', 'pkgname': 'ffmpeg', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libavcodec-extra', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libavcodec-extra60', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libavcodec60', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libavdevice60', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libavfilter-extra', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libavfilter-extra9', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libavfilter9', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libavformat-extra', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libavformat-extra60', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libavformat60', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libavutil58', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libpostproc57', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libswresample4', 'pkgver': '7:6.1.1-3ubuntu5+esm11'},
    {'osver': '24.04', 'pkgname': 'libswscale7', 'pkgver': '7:6.1.1-3ubuntu5+esm11'}
];

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'];
  if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
  if (osver && pkgname && pkgver) {
    if (deb_check(release:osver, prefix:pkgname, reference:pkgver, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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 / libavcodec-extra / libavcodec-extra57 / libavcodec-extra58 / etc');
}