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RHEL 9 : thunderbird (RHSA-2026:0019)

🗓️ 05 Jan 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 1 Views

RHEL9 Thunderbird has multiple vulnerabilities fixed by RHSA-2026-0019, including CVE-2025-14321 to CVE-2025-14333.

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#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2026:0019. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(281668);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/18");

  script_cve_id(
    "CVE-2025-14321",
    "CVE-2025-14322",
    "CVE-2025-14323",
    "CVE-2025-14324",
    "CVE-2025-14325",
    "CVE-2025-14328",
    "CVE-2025-14329",
    "CVE-2025-14330",
    "CVE-2025-14331",
    "CVE-2025-14333"
  );
  script_xref(name:"RHSA", value:"2026:0019");

  script_name(english:"RHEL 9 : thunderbird (RHSA-2026:0019)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for thunderbird.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as
referenced in the RHSA-2026:0019 advisory.

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    Security Fix(es):

    * firefox: Memory safety bugs fixed in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and
    Thunderbird 146 (CVE-2025-14333)

    * firefox: Use-after-free in the WebRTC: Signaling component (CVE-2025-14321)

    * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2025-14325)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
    (CVE-2025-14322)

    * firefox: Privilege escalation in the Netmonitor component (CVE-2025-14328)

    * firefox: Privilege escalation in the Netmonitor component (CVE-2025-14329)

    * firefox: Same-origin policy bypass in the Request Handling component (CVE-2025-14331)

    * firefox: Privilege escalation in the DOM: Notifications component (CVE-2025-14323)

    * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2025-14330)

    * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2025-14324)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and
    other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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://access.redhat.com/security/updates/classification/#important");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2420502");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2420503");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2420504");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2420506");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2420508");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2420509");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2420512");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2420513");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2420516");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2420517");
  # https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_0019.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9cd6ec3a");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2026:0019");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL thunderbird package based on the guidance in RHSA-2026:0019.");
  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:POC/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:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-14330");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(94);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/12/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_e4s:9.2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:thunderbird");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Red Hat 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", "redhat_repos.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include('rpm2.inc');
include('rhel.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) || 'Red Hat' >!< os_product) audit(AUDIT_OS_NOT, 'Red Hat');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
if (!rhel_check_release(operator: 'eq', os_version: os_version, rhel_version: '9.2')) audit(AUDIT_OS_NOT, 'Red Hat 9.2', 'Red Hat ' + 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 && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

var constraints = [
  {
    'release': '9',
    'sp': '2',
    'repo_relative_urls': [
      'content/aus/rhel9/9.2/x86_64/appstream/debug',
      'content/aus/rhel9/9.2/x86_64/appstream/os',
      'content/aus/rhel9/9.2/x86_64/appstream/source/SRPMS',
      'content/e4s/rhel9/9.2/aarch64/appstream/debug',
      'content/e4s/rhel9/9.2/aarch64/appstream/os',
      'content/e4s/rhel9/9.2/aarch64/appstream/source/SRPMS',
      'content/e4s/rhel9/9.2/ppc64le/appstream/debug',
      'content/e4s/rhel9/9.2/ppc64le/appstream/os',
      'content/e4s/rhel9/9.2/ppc64le/appstream/source/SRPMS',
      'content/e4s/rhel9/9.2/s390x/appstream/debug',
      'content/e4s/rhel9/9.2/s390x/appstream/os',
      'content/e4s/rhel9/9.2/s390x/appstream/source/SRPMS',
      'content/e4s/rhel9/9.2/x86_64/appstream/debug',
      'content/e4s/rhel9/9.2/x86_64/appstream/os',
      'content/e4s/rhel9/9.2/x86_64/appstream/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'thunderbird-140.6.0-1.el9_2', 'sp':'2', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE}
    ]
  }
];

var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

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 repo_relative_urls;
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;
  }

  if (!empty_or_null(constraint['repo_relative_urls'])) repo_relative_urls = constraint['repo_relative_urls'];

  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 &&
        rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
        (applicable_repo_urls || (!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)
{
  var subscription_caveat = '\n' +
    'NOTE: This vulnerability check contains fixes that apply to\n' +
    'packages only available in the Red Hat Enterprise Linux\n' +
    'Update Services for SAP Solutions repository.\n' +
    'Access to this repository requires a paid RHEL subscription.\n';
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = subscription_caveat + rpm_report_get() + redhat_report_repo_caveat();
  else extra = subscription_caveat + rpm_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'thunderbird');
}

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18 Feb 2026 00:00Current
8.4High risk
Vulners AI Score8.4
CVSS 3.19.8
EPSS0.00103
SSVC
1