TencentOS Server 3: webkit2gtk3 (TSSA-2026:0777)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2026:0777.
##

include('compat.inc');

if (description)
{
  script_id(330781);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/30");

  script_cve_id(
    "CVE-2024-4367",
    "CVE-2026-39872",
    "CVE-2026-43663",
    "CVE-2026-43676",
    "CVE-2026-43699",
    "CVE-2026-43701",
    "CVE-2026-43705",
    "CVE-2026-43707",
    "CVE-2026-43712",
    "CVE-2026-43713",
    "CVE-2026-43715",
    "CVE-2026-43716",
    "CVE-2026-43720",
    "CVE-2026-43721",
    "CVE-2026-43725",
    "CVE-2026-43726",
    "CVE-2026-43727",
    "CVE-2026-43731",
    "CVE-2026-43732",
    "CVE-2026-43734",
    "CVE-2026-43740",
    "CVE-2026-43742",
    "CVE-2026-43745"
  );

  script_name(english:"TencentOS Server 3: webkit2gtk3 (TSSA-2026:0777)");

  script_set_attribute(attribute:"synopsis", value:
"The remote TencentOS Server 3 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 3 host is prior to tested version. It is,
therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0777 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

    CVE-2024-4367:
    A type check was missing when handling fonts in PDF.js, which would allow arbitrary JavaScript execution
    in the PDF.js context. This vulnerability affects Firefox < 126, Firefox ESR < 115.11, and Thunderbird <
    115.11.

    CVE-2026-39872:
    The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2
    and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an
    unexpected process crash.

    CVE-2026-43663:
    The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2
    and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an
    unexpected process crash.

    CVE-2026-43676:
    An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in Safari
    26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may
    lead to an unexpected Safari crash.

    CVE-2026-43699:
    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari
    26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may
    lead to an unexpected process crash.

    CVE-2026-43701:
    The issue was addressed with improved checks. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS
    26.5.2, macOS Tahoe 26.5.2. A malicious website may be able to process restricted web content outside the
    sandbox.

    CVE-2026-43705:
    A type confusion issue was addressed with improved checks. This issue is fixed in Safari 26.5.2, iOS
    26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to
    memory corruption.

    CVE-2026-43707:
    A memory corruption issue was addressed with improved memory handling. This issue is fixed in Safari
    26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may
    lead to an unexpected process crash.

    CVE-2026-43712:
    The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2
    and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an
    unexpected process crash.

    CVE-2026-43713:
    A permissions issue was addressed with additional restrictions. This issue is fixed in Safari 26.5.2, iOS
    26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Visiting a website may leak sensitive data.

    CVE-2026-43715:
    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari
    26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may
    lead to memory corruption.

    CVE-2026-43716:
    The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2
    and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an
    unexpected Safari crash.

    CVE-2026-43720:
    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari
    26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may
    lead to an unexpected Safari crash.

    CVE-2026-43721:
    This issue was addressed through improved state management. This issue is fixed in Safari 26.5.2, iOS
    26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. A malicious website may be able to silently hijack clipboard
    data.

    CVE-2026-43725:
    The issue was addressed with improved input validation. This issue is fixed in Safari 26.5.2, iOS 26.5.2
    and iPadOS 26.5.2, macOS Tahoe 26.5.2. A malicious website may be able to process restricted web content
    outside the sandbox.

    CVE-2026-43726:
    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari
    26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may
    lead to an unexpected process crash.

    CVE-2026-43727:
    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari
    26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may
    lead to an unexpected Safari crash.

    CVE-2026-43731:
    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari
    26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may
    lead to memory corruption.

    CVE-2026-43732:
    A path handling issue was addressed with improved validation. This issue is fixed in Safari 26.5.2, iOS
    26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may disclose
    sensitive user information.

    CVE-2026-43734:
    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari
    26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may
    lead to an unexpected process crash.

    CVE-2026-43740:
    The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2
    and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may result in the
    disclosure of process memory.

    CVE-2026-43742:
    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari
    26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may
    lead to an unexpected process crash.

    CVE-2026-43745:
    An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in Safari
    26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may
    lead to an unexpected Safari crash.

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-20260777.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:H/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:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-4367");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/05/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/29");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:tencent:tencentos_server:3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:webkit2gtk3");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  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:"^3([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'TencentOS 3.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': '3',
    'pkgs': [
      {'reference':'webkit2gtk3-2.52.5-1.tl3', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-2.52.5-1.tl3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-debuginfo-2.52.5-1.tl3', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-debuginfo-2.52.5-1.tl3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-debugsource-2.52.5-1.tl3', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-debugsource-2.52.5-1.tl3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-devel-2.52.5-1.tl3', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-devel-2.52.5-1.tl3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-devel-debuginfo-2.52.5-1.tl3', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-devel-debuginfo-2.52.5-1.tl3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-jsc-2.52.5-1.tl3', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-jsc-2.52.5-1.tl3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-jsc-debuginfo-2.52.5-1.tl3', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-jsc-debuginfo-2.52.5-1.tl3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-jsc-devel-2.52.5-1.tl3', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-jsc-devel-2.52.5-1.tl3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-jsc-devel-debuginfo-2.52.5-1.tl3', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-jsc-devel-debuginfo-2.52.5-1.tl3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':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, 'webkit2gtk3 / webkit2gtk3-debuginfo / webkit2gtk3-debugsource / etc');
}