Security Updates for Microsoft .NET core (June 2022)

##
# (C) Tenable, Inc. 
##

include('compat.inc');

if (description)
{
  script_id(162314);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/19");

  script_cve_id("CVE-2022-30184");
  script_xref(name:"MSKB", value:"5015424");
  script_xref(name:"MSKB", value:"5015429");
  script_xref(name:"MSFT", value:"MS22-5015424");
  script_xref(name:"MSFT", value:"MS22-5015429");
  script_xref(name:"IAVA", value:"2022-A-0235-S");

  script_name(english:"Security Updates for Microsoft .NET core (June 2022)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft .NET core installations on the remote host are affected by an information disclosure vulnerability.");
  script_set_attribute(attribute:"description", value:
"An information disclosure vulnerability exists in .NET core 6.0 < 6.0.6 and .NET Core 3.1 < 3.1.26. An unauthenticated,
local attacker can exploit this, to disclose potentially sensitive information.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://dotnet.microsoft.com/download/dotnet/3.1");
  script_set_attribute(attribute:"see_also", value:"https://dotnet.microsoft.com/download/dotnet/6.0");
  script_set_attribute(attribute:"see_also", value:"https://github.com/dotnet/announcements/issues/225");
  # https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-30184
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bfb8ea98");
  script_set_attribute(attribute:"solution", value:
"Update .NET Core Runtime to version 3.1.26 or 6.0.6.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-30184");

  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:"2022/06/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/06/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/06/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:.net_core");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2022-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("microsoft_dotnet_core_win.nbin", "macosx_dotnet_core_installed.nbin");
  script_require_ports("installed_sw/.NET Core Windows", "installed_sw/.NET Core MacOS");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': '.NET Core Windows', 'type': 'app'},
      'check_algorithm': 'default',
      'requires': [{'scope': 'target', 'match': {'os': 'windows'}}],
      'constraints': [
        {'min_version': '3.1', 'fixed_version': '3.1.26'},
        {'min_version': '6.0', 'fixed_version': '6.0.6'}
      ]
    },
    {
      'product': {'name': '.NET Core MacOS', 'type': 'app'},
      'check_algorithm': 'default',
      'requires': [{'scope': 'target', 'match': {'os': 'macos'}}],
      'constraints': [
        {'min_version': '3.1', 'fixed_version': '3.1.26'},
        {'min_version': '6.0', 'fixed_version': '6.0.6'}
      ]
    }
  ]
};

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