Linux Distros Unpatched Vulnerability : CVE-2026-43705

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(327456);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/19");

  script_cve_id("CVE-2026-43705");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-43705");

  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - 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-2026-43705)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2026-43705");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-43705");
  script_set_attribute(attribute:"solution", value:
"There is no known solution at this time.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:U/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:U/RL:U/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-43705");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_unpatched", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:13.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:14.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkit2gtk3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkit2gtk3-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkit2gtk3-jsc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkit2gtk3-jsc-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkit2gtk3-plugin-process-gtk2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:webkit2gtk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:wpewebkit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkit2gtk3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-jsc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-jsc-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-plugin-process-gtk2");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  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", "set_linux_os_id.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
  script_require_ports("Host/OS/CentOS Linux-8", "Host/OS/Debian Linux-11", "Host/OS/Debian Linux-12", "Host/OS/Debian Linux-13", "Host/OS/Debian Linux-14", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9");

  exit(0);
}

if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/CentOS/rpm-list")) && empty_or_null(get_one_kb_item("Host/Debian/dpkg-l")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Debian Linux-12": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "12",
        "pkgs": [
          {"reference": "gir1.2-javascriptcoregtk-4.0"},
          {"reference": "gir1.2-javascriptcoregtk-4.1"},
          {"reference": "gir1.2-javascriptcoregtk-6.0"},
          {"reference": "gir1.2-webkit-6.0"},
          {"reference": "gir1.2-webkit2-4.0"},
          {"reference": "gir1.2-webkit2-4.1"},
          {"reference": "libjavascriptcoregtk-4.0-18"},
          {"reference": "libjavascriptcoregtk-4.0-bin"},
          {"reference": "libjavascriptcoregtk-4.0-dev"},
          {"reference": "libjavascriptcoregtk-4.1-0"},
          {"reference": "libjavascriptcoregtk-4.1-dev"},
          {"reference": "libjavascriptcoregtk-6.0-1"},
          {"reference": "libjavascriptcoregtk-6.0-dev"},
          {"reference": "libwebkit2gtk-4.0-37"},
          {"reference": "libwebkit2gtk-4.0-dev"},
          {"reference": "libwebkit2gtk-4.0-doc"},
          {"reference": "libwebkit2gtk-4.1-0"},
          {"reference": "libwebkit2gtk-4.1-dev"},
          {"reference": "libwebkitgtk-6.0-4"},
          {"reference": "libwebkitgtk-6.0-dev"},
          {"reference": "libwpewebkit-1.0-doc"},
          {"reference": "libwpewebkit-1.1-0"},
          {"reference": "libwpewebkit-1.1-dev"},
          {"reference": "webkit2gtk-driver"},
          {"reference": "wpewebkit-driver"}
        ]
      }
    ]
  },
  "Debian Linux-11": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "11",
        "pkgs": [
          {"reference": "gir1.2-javascriptcoregtk-4.0"},
          {"reference": "gir1.2-webkit2-4.0"},
          {"reference": "libjavascriptcoregtk-4.0-18"},
          {"reference": "libjavascriptcoregtk-4.0-bin"},
          {"reference": "libjavascriptcoregtk-4.0-dev"},
          {"reference": "libwebkit2gtk-4.0-37"},
          {"reference": "libwebkit2gtk-4.0-dev"},
          {"reference": "libwebkit2gtk-4.0-doc"},
          {"reference": "libwpewebkit-1.0-3"},
          {"reference": "libwpewebkit-1.0-dev"},
          {"reference": "libwpewebkit-1.0-doc"},
          {"reference": "webkit2gtk-driver"},
          {"reference": "wpewebkit-driver"}
        ]
      }
    ]
  },
  "Debian Linux-14": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14",
        "pkgs": [
          {"reference": "gir1.2-javascriptcoregtk-4.1"},
          {"reference": "gir1.2-javascriptcoregtk-6.0"},
          {"reference": "gir1.2-webkit-6.0"},
          {"reference": "gir1.2-webkit2-4.1"},
          {"reference": "libjavascriptcoregtk-4.1-0"},
          {"reference": "libjavascriptcoregtk-4.1-dev"},
          {"reference": "libjavascriptcoregtk-6.0-1"},
          {"reference": "libjavascriptcoregtk-6.0-dev"},
          {"reference": "libjavascriptcoregtk-bin"},
          {"reference": "libwebkit2gtk-4.1-0"},
          {"reference": "libwebkit2gtk-4.1-dev"},
          {"reference": "libwebkitgtk-6.0-4"},
          {"reference": "libwebkitgtk-6.0-dev"},
          {"reference": "libwebkitgtk-doc"},
          {"reference": "webkitgtk-webdriver"}
        ]
      }
    ]
  },
  "Debian Linux-13": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "13",
        "pkgs": [
          {"reference": "gir1.2-javascriptcoregtk-4.1"},
          {"reference": "gir1.2-javascriptcoregtk-6.0"},
          {"reference": "gir1.2-webkit-6.0"},
          {"reference": "gir1.2-webkit2-4.1"},
          {"reference": "libjavascriptcoregtk-4.0-bin"},
          {"reference": "libjavascriptcoregtk-4.1-0"},
          {"reference": "libjavascriptcoregtk-4.1-dev"},
          {"reference": "libjavascriptcoregtk-6.0-1"},
          {"reference": "libjavascriptcoregtk-6.0-dev"},
          {"reference": "libjavascriptcoregtk-bin"},
          {"reference": "libwebkit2gtk-4.0-doc"},
          {"reference": "libwebkit2gtk-4.1-0"},
          {"reference": "libwebkit2gtk-4.1-dev"},
          {"reference": "libwebkitgtk-6.0-4"},
          {"reference": "libwebkitgtk-6.0-dev"},
          {"reference": "libwebkitgtk-doc"},
          {"reference": "libwpewebkit-1.0-doc"},
          {"reference": "libwpewebkit-2.0-1"},
          {"reference": "libwpewebkit-2.0-dev"},
          {"reference": "libwpewebkit-doc"},
          {"reference": "webkit2gtk-driver"},
          {"reference": "webkitgtk-webdriver"},
          {"reference": "wpewebkit-driver"},
          {"reference": "wpewebkit-webdriver"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "webkit2gtk3"},
          {"reference": "webkit2gtk3-devel"},
          {"reference": "webkit2gtk3-jsc"},
          {"reference": "webkit2gtk3-jsc-devel"},
          {"reference": "webkit2gtk3-plugin-process-gtk2"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "webkit2gtk3"},
          {"reference": "webkit2gtk3-devel"},
          {"reference": "webkit2gtk3-jsc"},
          {"reference": "webkit2gtk3-jsc-devel"},
          {"reference": "webkit2gtk3-plugin-process-gtk2"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "webkit2gtk3"},
          {"reference": "webkit2gtk3-devel"},
          {"reference": "webkit2gtk3-jsc"},
          {"reference": "webkit2gtk3-jsc-devel"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (!empty_or_null(third_party_support)) {
    var third_party_vendors = distro_constraints_values['third_party'];
    if (!empty_or_null(third_party_vendors)) {
        var vendor;
        foreach vendor (third_party_vendors) {
            if (vendor == third_party_support) exit(0, 'A third party management patch is available for this vulnerability from ' + vendor + '.\n');
        }
    }
}

var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}