Golang 1.26.x < 1.26.6 DoS

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

include('compat.inc');

if (description)
{
  script_id(338315);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/21");

  script_cve_id("CVE-2026-46600");
  script_xref(name:"IAVB", value:"2026-B-0234");

  script_name(english:"Golang 1.26.x < 1.26.6 DoS");

  script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote host is affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Golang running on the remote host is 1.26.x prior to 1.26.6. It is, therefore, affected by a denial of
service vulnerability in the bundled golang.org/x/net/dns/dnsmessage package. Parsing an invalid SVCB or HTTPS RR can
panic when the size of a parameter value overflows the message buffer.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://groups.google.com/g/golang-announce/c/94pEornpRlI
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3e20b36a");
  script_set_attribute(attribute:"see_also", value:"https://go.dev/issue/79795");
  script_set_attribute(attribute:"see_also", value:"https://pkg.go.dev/vuln/GO-2026-5942");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Golang Go version 1.26.6 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-46600");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/07/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:golang:go");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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("golang_win_installed.nbin", "golang_macos_installed.nbin");
  script_require_keys("installed_sw/Golang Go Programming Language");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Golang Go Programming Language', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'min_version': '1.26.0', 'fixed_version': '1.26.6'}
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_HOLE);
vdf::handle_check_and_report_errors(vdf_result:result);