TencentOS Server 4: firefox (TSSA-2026:0788)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2026:0788.
##

include('compat.inc');

if (description)
{
  script_id(333134);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/06");

  script_cve_id(
    "CVE-2026-15718",
    "CVE-2026-15719",
    "CVE-2026-16349",
    "CVE-2026-16350",
    "CVE-2026-16351",
    "CVE-2026-16352",
    "CVE-2026-16353",
    "CVE-2026-16354",
    "CVE-2026-16355",
    "CVE-2026-16356",
    "CVE-2026-16357",
    "CVE-2026-16358",
    "CVE-2026-16359",
    "CVE-2026-16360",
    "CVE-2026-16361",
    "CVE-2026-16362",
    "CVE-2026-16363",
    "CVE-2026-16368",
    "CVE-2026-16369",
    "CVE-2026-16371",
    "CVE-2026-16374",
    "CVE-2026-16375",
    "CVE-2026-16377",
    "CVE-2026-16379",
    "CVE-2026-16381",
    "CVE-2026-16383",
    "CVE-2026-16387",
    "CVE-2026-16390",
    "CVE-2026-16391",
    "CVE-2026-16396",
    "CVE-2026-16405",
    "CVE-2026-16412"
  );
  script_xref(name:"IAVA", value:"2026-A-0695-S");
  script_xref(name:"IAVA", value:"2026-A-0755");

  script_name(english:"TencentOS Server 4: firefox (TSSA-2026:0788)");

  script_set_attribute(attribute:"synopsis", value:
"The remote TencentOS Server 4 host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is,
therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0788 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2026-16412:
    Memory safety bugs present in Firefox ESR 140.12 and Firefox 152. Some of these bugs showed evidence of
    memory corruption and we presume that with enough effort some of these could have been exploited to run
    arbitrary code. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.

    CVE-2026-16405:
    Information disclosure in the Networking: WebSockets component. This vulnerability was fixed in Firefox
    153 and Firefox ESR 140.13.

    CVE-2026-16396:
    Privilege escalation in WebExtensions. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.

    CVE-2026-16391:
    Information disclosure in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 153
    and Firefox ESR 140.13.

    CVE-2026-16390:
    Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 153 and
    Firefox ESR 140.13.

    CVE-2026-16387:
    Site isolation issue in the Networking component. This vulnerability was fixed in Firefox 153 and Firefox
    ESR 140.13.

    CVE-2026-16383:
    Mitigation bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 153 and
    Firefox ESR 140.13.

    CVE-2026-16381:
    Same-origin policy bypass in the Networking: DNS component. This vulnerability was fixed in Firefox 153
    and Firefox ESR 140.13.

    CVE-2026-16379:
    Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in Firefox 153
    and Firefox ESR 140.13.

    CVE-2026-16377:
    Mitigation bypass in the PDF Viewer component. This vulnerability was fixed in Firefox 153 and Firefox ESR
    140.13.

    CVE-2026-16375:
    Site isolation issue in the Networking: HTTP component. This vulnerability was fixed in Firefox 153 and
    Firefox ESR 140.13.

    CVE-2026-16374:
    Information disclosure in the Framework component in DevTools. This vulnerability was fixed in Firefox 153
    and Firefox ESR 140.13.

    CVE-2026-16371:
    Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 153 and
    Firefox ESR 140.13.

    CVE-2026-16369:
    Integer overflow in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 153 and
    Firefox ESR 140.13.

    CVE-2026-16368:
    Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in
    Firefox 153 and Firefox ESR 140.13.

    CVE-2026-16363:
    JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 153
    and Firefox ESR 140.13.

    CVE-2026-16362:
    Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 153 and
    Firefox ESR 140.13.

    CVE-2026-16361:
    Memory safety bugs present in Firefox ESR 115.37 and Firefox ESR 140.12. Some of these bugs showed
    evidence of memory corruption and we presume that with enough effort some of these could have been
    exploited to run arbitrary code. This vulnerability was fixed in Firefox ESR 115.38 and Firefox ESR
    140.13.

    CVE-2026-16360:
    Memory safety bugs present in Firefox ESR 115.37, Firefox ESR 140.12 and Firefox 152. Some of these bugs
    showed evidence of memory corruption and we presume that with enough effort some of these could have been
    exploited to run arbitrary code. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and
    Firefox ESR 140.13.

    CVE-2026-16359:
    Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox
    153, Firefox ESR 115.38, and Firefox ESR 140.13.

    CVE-2026-16358:
    Site isolation issue in the Graphics: WebRender component. This vulnerability was fixed in Firefox 153,
    Firefox ESR 115.38, and Firefox ESR 140.13.

    CVE-2026-16357:
    Incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 153,
    Firefox ESR 115.38, and Firefox ESR 140.13.

    CVE-2026-16356:
    Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed
    in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.

    CVE-2026-16355:
    JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153,
    Firefox ESR 115.38, and Firefox ESR 140.13.

    CVE-2026-16354:
    Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 153,
    Firefox ESR 115.38, and Firefox ESR 140.13.

    CVE-2026-16353:
    Invalid pointer in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 153,
    Firefox ESR 115.38, and Firefox ESR 140.13.

    CVE-2026-16352:
    Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed
    in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.

    CVE-2026-16351:
    Sandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in
    Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.

    CVE-2026-16350:
    Incorrect boundary conditions in the Audio/Video: cubeb component. This vulnerability was fixed in Firefox
    153, Firefox ESR 115.38, and Firefox ESR 140.13.

    CVE-2026-16349:
    Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 153,
    Firefox ESR 115.38, and Firefox ESR 140.13.

    CVE-2026-15719:
    We are aware that exploit code for this is public however we are not aware of any attacks in the wild
    abusing this flaw. This vulnerability was fixed in Firefox 152.0.6.

    CVE-2026-15718:
    We are aware that exploit code for this is public however we are not aware of any attacks in the wild
    abusing this flaw. This vulnerability was fixed in Firefox 152.0.6.

Tenable has extracted the preceding description block directly from the Tencent 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://mirrors.tencent.com/tlinux/errata/tssa-20260788.xml");
  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: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-2026-16412");

  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:"2026/07/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:tencent:tencentos_server:4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:firefox");
  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:"Tencent 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_info2.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/etc/os-release", "Host/TencentOS/rpm-list", "Host/cpu");

  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) || 'TencentOS' >!< os_product) audit(AUDIT_OS_NOT, 'TencentOS');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'TencentOS');
if (! preg(pattern:"^4([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'TencentOS 4.x', 'TencentOS ' + os_version);

if (!get_kb_item('Host/TencentOS/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, 'TencentOS', cpu);

var constraints = [
  {
    'release': '4',
    'pkgs': [
      {'reference':'firefox-140.13.0-1.tl4.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE},
      {'reference':'firefox-140.13.0-1.tl4.ap.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE},
      {'reference':'firefox-debuginfo-140.13.0-1.tl4.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE},
      {'reference':'firefox-debuginfo-140.13.0-1.tl4.ap.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE},
      {'reference':'firefox-debugsource-140.13.0-1.tl4.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE},
      {'reference':'firefox-debugsource-140.13.0-1.tl4.ap.1', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE},
      {'reference':'firefox-x11-140.13.0-1.tl4.ap.1', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE},
      {'reference':'firefox-x11-140.13.0-1.tl4.ap.1', 'cpu':'x86_64', '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, 'firefox / firefox-debuginfo / firefox-debugsource / etc');
}