Linux Distros Unpatched Vulnerability : CVE-2026-63270

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

include('compat.inc');

if (description)
{
  script_id(362965);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/05");

  script_cve_id("CVE-2026-63270");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-63270");

  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.

  - URLs could be constructed which expanded environment variable or INI file values, so potentially sensitive
    information could be exfiltrated to a remote server on opening a document containing such links. The check
    added for CVE-2024-12426 did not cover every place a document can supply a URL. XForms instance data and
    the Calc csv and sql data providers still reached the expansion. In fixed versions these places refuse
    URLs with internal schemes when the URL comes from the document. (CVE-2026-63270)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-63270");
  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:L/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:N/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:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-63270");

  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:"2026/10/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  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:"p-cpe:/a:debian:debian_linux:libreoffice");
  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/Debian Linux-12", "Host/OS/Debian Linux-13");

  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/Debian/dpkg-l"))) 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": "libofficebean-java"},
          {"reference": "libreoffice"},
          {"reference": "libreoffice-base"},
          {"reference": "libreoffice-base-core"},
          {"reference": "libreoffice-base-drivers"},
          {"reference": "libreoffice-base-nogui"},
          {"reference": "libreoffice-calc"},
          {"reference": "libreoffice-calc-nogui"},
          {"reference": "libreoffice-common"},
          {"reference": "libreoffice-core"},
          {"reference": "libreoffice-core-nogui"},
          {"reference": "libreoffice-draw"},
          {"reference": "libreoffice-draw-nogui"},
          {"reference": "libreoffice-gnome"},
          {"reference": "libreoffice-help-common"},
          {"reference": "libreoffice-impress"},
          {"reference": "libreoffice-impress-nogui"},
          {"reference": "libreoffice-java-common"},
          {"reference": "libreoffice-l10n-af"},
          {"reference": "libreoffice-l10n-am"},
          {"reference": "libreoffice-l10n-ar"},
          {"reference": "libreoffice-l10n-as"},
          {"reference": "libreoffice-l10n-in"},
          {"reference": "libreoffice-l10n-za"},
          {"reference": "libreoffice-math"},
          {"reference": "libreoffice-math-nogui"},
          {"reference": "libreoffice-nogui"},
          {"reference": "libreoffice-script-provider-bsh"},
          {"reference": "libreoffice-script-provider-js"},
          {"reference": "libreoffice-script-provider-python"},
          {"reference": "libreoffice-sdbc-hsqldb"},
          {"reference": "libreoffice-sdbc-mysql"},
          {"reference": "libreoffice-style-breeze"},
          {"reference": "libreoffice-style-colibre"},
          {"reference": "libreoffice-style-elementary"},
          {"reference": "libreoffice-style-karasa-jaga"},
          {"reference": "libreoffice-style-sifr"},
          {"reference": "libreoffice-style-sukapura"},
          {"reference": "libreoffice-writer"},
          {"reference": "libreoffice-writer-nogui"},
          {"reference": "python3-access2base"},
          {"reference": "python3-uno"}
        ]
      }
    ]
  },
  "Debian Linux-13": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "13",
        "pkgs": [
          {"reference": "libofficebean-java"},
          {"reference": "libreoffice"},
          {"reference": "libreoffice-base"},
          {"reference": "libreoffice-base-core"},
          {"reference": "libreoffice-base-drivers"},
          {"reference": "libreoffice-base-nogui"},
          {"reference": "libreoffice-calc"},
          {"reference": "libreoffice-calc-nogui"},
          {"reference": "libreoffice-common"},
          {"reference": "libreoffice-core"},
          {"reference": "libreoffice-core-nogui"},
          {"reference": "libreoffice-draw"},
          {"reference": "libreoffice-draw-nogui"},
          {"reference": "libreoffice-gnome"},
          {"reference": "libreoffice-help-common"},
          {"reference": "libreoffice-impress"},
          {"reference": "libreoffice-impress-nogui"},
          {"reference": "libreoffice-java-common"},
          {"reference": "libreoffice-l10n-in"},
          {"reference": "libreoffice-l10n-za"},
          {"reference": "libreoffice-math"},
          {"reference": "libreoffice-math-nogui"},
          {"reference": "libreoffice-nogui"},
          {"reference": "libreoffice-script-provider-bsh"},
          {"reference": "libreoffice-script-provider-js"},
          {"reference": "libreoffice-script-provider-python"},
          {"reference": "libreoffice-sdbc-hsqldb"},
          {"reference": "libreoffice-sdbc-mysql"},
          {"reference": "libreoffice-style-breeze"},
          {"reference": "libreoffice-style-colibre"},
          {"reference": "libreoffice-style-elementary"},
          {"reference": "libreoffice-style-karasa-jaga"},
          {"reference": "libreoffice-style-sifr"},
          {"reference": "libreoffice-style-sukapura"},
          {"reference": "libreoffice-uiconfig-base"},
          {"reference": "libreoffice-uiconfig-common"},
          {"reference": "libreoffice-writer"},
          {"reference": "libreoffice-writer-nogui"},
          {"reference": "python3-access2base"},
          {"reference": "python3-scriptforge"},
          {"reference": "python3-uno"}
        ]
      }
    ]
  }
};

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');
}