Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : EDK II vulnerabilities (USN-8865-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8865-1. 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(363109);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/06");

  script_cve_id(
    "CVE-2026-54874",
    "CVE-2026-63072",
    "CVE-2026-63076",
    "CVE-2026-75803"
  );
  script_xref(name:"USN", value:"8865-1");

  script_name(english:"Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : EDK II vulnerabilities (USN-8865-1)");

  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 / 26.04 LTS host has packages installed that are
affected by multiple vulnerabilities as referenced in the USN-8865-1 advisory.

    It was discovered that EDK II incorrectly handled CMS key unwrapping in the embedded OpenSSL library. An
    attacker could possibly use this issue to cause a heap buffer overflow, resulting in a denial of service.
    This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and
    Ubuntu 26.04 LTS. (CVE-2026-63072)

    It was discovered that EDK II incorrectly handled CMP protection verification in the embedded OpenSSL
    library. An attacker could possibly use this issue to cause a denial of service. This issue only affected
    Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-63076)

    It was discovered that EDK II incorrectly buffered DTLS records in the embedded OpenSSL library. A remote
    attacker could possibly use this issue to cause EDK II to consume excessive memory, resulting in a denial
    of service. (CVE-2026-54874)

    It was discovered that EDK II incorrectly verified AEAD tags in the embedded OpenSSL library. An attacker
    could possibly use this issue to cause EDK II to accept forged messages. This issue only affected Ubuntu
    24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-75803)

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-8865-1");
  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:N");
  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:N/S:U/C:H/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-75803");

  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:"2026/08/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/06");

  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:"cpe:/o:canonical:ubuntu_linux:26.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:efi-shell-aa64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:efi-shell-arm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:efi-shell-ia32");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:efi-shell-loongarch64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:efi-shell-riscv64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:efi-shell-x64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ovmf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ovmf-amdsev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ovmf-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ovmf-ia32");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ovmf-inteltdx");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ovmf-legacy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-efi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-efi-aarch64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-efi-arm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-efi-loongarch64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-efi-riscv64");
  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) 2026 Canonical, Inc. / NASL script (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.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 || '26.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 18.04 / 20.04 / 22.04 / 24.04 / 26.04', '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': 'ovmf', 'pkgver': '0~20180205.c0d9813c-2ubuntu0.3+esm3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072']},
    {'osver': '18.04', 'pkgname': 'qemu-efi', 'pkgver': '0~20180205.c0d9813c-2ubuntu0.3+esm3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072']},
    {'osver': '18.04', 'pkgname': 'qemu-efi-aarch64', 'pkgver': '0~20180205.c0d9813c-2ubuntu0.3+esm3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072']},
    {'osver': '18.04', 'pkgname': 'qemu-efi-arm', 'pkgver': '0~20180205.c0d9813c-2ubuntu0.3+esm3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072']},
    {'osver': '20.04', 'pkgname': 'ovmf', 'pkgver': '0~20191122.bd85bf54-2ubuntu3.6+esm1', 'cves': ['CVE-2026-54874', 'CVE-2026-63072']},
    {'osver': '20.04', 'pkgname': 'qemu-efi', 'pkgver': '0~20191122.bd85bf54-2ubuntu3.6+esm1', 'cves': ['CVE-2026-54874', 'CVE-2026-63072']},
    {'osver': '20.04', 'pkgname': 'qemu-efi-aarch64', 'pkgver': '0~20191122.bd85bf54-2ubuntu3.6+esm1', 'cves': ['CVE-2026-54874', 'CVE-2026-63072']},
    {'osver': '20.04', 'pkgname': 'qemu-efi-arm', 'pkgver': '0~20191122.bd85bf54-2ubuntu3.6+esm1', 'cves': ['CVE-2026-54874', 'CVE-2026-63072']},
    {'osver': '22.04', 'pkgname': 'ovmf', 'pkgver': '2022.02-3ubuntu0.22.04.7', 'cves': ['CVE-2026-54874', 'CVE-2026-63072']},
    {'osver': '22.04', 'pkgname': 'ovmf-ia32', 'pkgver': '2022.02-3ubuntu0.22.04.7', 'cves': ['CVE-2026-54874', 'CVE-2026-63072']},
    {'osver': '22.04', 'pkgname': 'qemu-efi', 'pkgver': '2022.02-3ubuntu0.22.04.7', 'cves': ['CVE-2026-54874', 'CVE-2026-63072']},
    {'osver': '22.04', 'pkgname': 'qemu-efi-aarch64', 'pkgver': '2022.02-3ubuntu0.22.04.7', 'cves': ['CVE-2026-54874', 'CVE-2026-63072']},
    {'osver': '22.04', 'pkgname': 'qemu-efi-arm', 'pkgver': '2022.02-3ubuntu0.22.04.7', 'cves': ['CVE-2026-54874', 'CVE-2026-63072']},
    {'osver': '24.04', 'pkgname': 'efi-shell-aa64', 'pkgver': '2024.02-2ubuntu0.10', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '24.04', 'pkgname': 'efi-shell-arm', 'pkgver': '2024.02-2ubuntu0.10', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '24.04', 'pkgname': 'efi-shell-ia32', 'pkgver': '2024.02-2ubuntu0.10', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '24.04', 'pkgname': 'efi-shell-riscv64', 'pkgver': '2024.02-2ubuntu0.10', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '24.04', 'pkgname': 'efi-shell-x64', 'pkgver': '2024.02-2ubuntu0.10', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '24.04', 'pkgname': 'ovmf', 'pkgver': '2024.02-2ubuntu0.10', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '24.04', 'pkgname': 'ovmf-ia32', 'pkgver': '2024.02-2ubuntu0.10', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '24.04', 'pkgname': 'ovmf-legacy', 'pkgver': '2024.02-2ubuntu0.10', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '24.04', 'pkgname': 'qemu-efi-aarch64', 'pkgver': '2024.02-2ubuntu0.10', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '24.04', 'pkgname': 'qemu-efi-arm', 'pkgver': '2024.02-2ubuntu0.10', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '24.04', 'pkgname': 'qemu-efi-riscv64', 'pkgver': '2024.02-2ubuntu0.10', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '26.04', 'pkgname': 'efi-shell-aa64', 'pkgver': '2025.11-3ubuntu7.3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '26.04', 'pkgname': 'efi-shell-loongarch64', 'pkgver': '2025.11-3ubuntu7.3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '26.04', 'pkgname': 'efi-shell-riscv64', 'pkgver': '2025.11-3ubuntu7.3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '26.04', 'pkgname': 'efi-shell-x64', 'pkgver': '2025.11-3ubuntu7.3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '26.04', 'pkgname': 'ovmf', 'pkgver': '2025.11-3ubuntu7.3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '26.04', 'pkgname': 'ovmf-amdsev', 'pkgver': '2025.11-3ubuntu7.3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '26.04', 'pkgname': 'ovmf-generic', 'pkgver': '2025.11-3ubuntu7.3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '26.04', 'pkgname': 'ovmf-inteltdx', 'pkgver': '2025.11-3ubuntu7.3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '26.04', 'pkgname': 'ovmf-legacy', 'pkgver': '2025.11-3ubuntu7.3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '26.04', 'pkgname': 'qemu-efi-aarch64', 'pkgver': '2025.11-3ubuntu7.3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '26.04', 'pkgname': 'qemu-efi-loongarch64', 'pkgver': '2025.11-3ubuntu7.3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']},
    {'osver': '26.04', 'pkgname': 'qemu-efi-riscv64', 'pkgver': '2025.11-3ubuntu7.3', 'cves': ['CVE-2026-54874', 'CVE-2026-63072', 'CVE-2026-63076', 'CVE-2026-75803']}
];

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, 'efi-shell-aa64 / efi-shell-arm / efi-shell-ia32 / etc');
}