Fedora 43 : cef (2026-ffdca48c25)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
# The descriptive text and package checks in this plugin were
# extracted from Fedora Security Advisory FEDORA-2026-ffdca48c25
#

include('compat.inc');

if (description)
{
  script_id(306613);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/16");

  script_cve_id(
    "CVE-2026-5272",
    "CVE-2026-5273",
    "CVE-2026-5274",
    "CVE-2026-5275",
    "CVE-2026-5276",
    "CVE-2026-5277",
    "CVE-2026-5278",
    "CVE-2026-5279",
    "CVE-2026-5280",
    "CVE-2026-5281",
    "CVE-2026-5282",
    "CVE-2026-5283",
    "CVE-2026-5284",
    "CVE-2026-5285",
    "CVE-2026-5286",
    "CVE-2026-5287",
    "CVE-2026-5288",
    "CVE-2026-5289",
    "CVE-2026-5290",
    "CVE-2026-5291",
    "CVE-2026-5292"
  );
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2026/04/15");
  script_xref(name:"FEDORA", value:"2026-ffdca48c25");

  script_name(english:"Fedora 43 : cef (2026-ffdca48c25)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Fedora host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the
FEDORA-2026-ffdca48c25 advisory.

    Update to 146.0.7680.177 + cef-146.0.11+g8e1262b

    * High CVE-2026-5273: Use after free in CSS
    * High CVE-2026-5272: Heap buffer overflow in GPU
    * High CVE-2026-5274: Integer overflow in Codecs
    * High CVE-2026-5275: Heap buffer overflow in ANGLE
    * High CVE-2026-5276: Insufficient policy enforcement in WebUSB
    * High CVE-2026-5277: Integer overflow in ANGLE
    * High CVE-2026-5278: Use after free in Web MIDI
    * High CVE-2026-5279: Object corruption in V8
    * High CVE-2026-5280: Use after free in WebCodecs
    * High CVE-2026-5281: Use after free in Dawn
    * High CVE-2026-5282: Out of bounds read in WebCodecs
    * High CVE-2026-5283: Inappropriate implementation in ANGLE
    * High CVE-2026-5284: Use after free in Dawn
    * High CVE-2026-5285: Use after free in WebGL
    * High CVE-2026-5286: Use after free in Dawn
    * High CVE-2026-5287: Use after free in PDF
    * High CVE-2026-5288: Use after free in WebView
    * High CVE-2026-5289: Use after free in Navigation
    * High CVE-2026-5290: Use after free in Compositing
    * Medium CVE-2026-5291: Inappropriate implementation in WebGL
    * Medium CVE-2026-5292: Out of bounds read in WebCodecs

Tenable has extracted the preceding description block directly from the Fedora 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://bodhi.fedoraproject.org/updates/FEDORA-2026-ffdca48c25");
  script_set_attribute(attribute:"solution", value:
"Update the affected cef package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/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:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-5282");

  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:"2026/03/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:43");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:cef");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include('rpm2.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'Fedora' >!< os_product) audit(AUDIT_OS_NOT, 'Fedora');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Fedora');
if (! preg(pattern:"^43([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'Fedora 43', 'Fedora ' + os_version);

if (!get_kb_item('Host/RedHat/rpm-list')) 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, 'Fedora', cpu);

var constraints = [
  {
    'release': '43',
    'pkgs': [
      {'reference':'cef-146.0.11^chromium146.0.7680.177-2.fc43', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE}
    ]
  }
];

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        ## (no known rpm to check OR known rpm_exists)
        (!exists_check || rpm_exists(rpm:exists_check)) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'cef');
}