Security Update for .NET Core (August 2021) (macOS)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(152489);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/29");

  script_cve_id("CVE-2021-26423", "CVE-2021-34485");
  script_xref(name:"IAVA", value:"2021-A-0379");

  script_name(english:"Security Update for .NET Core (August 2021) (macOS)");

  script_set_attribute(attribute:"synopsis", value:
"The remote macOS host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft .NET Core installation on the remote host is version 2.1.x prior to 2.1.29, 3.1.x prior to 3.1.18, or 5.x
prior to 5.0.9.  It is, therefore affected by multiple vulnerabilities, as follows:

  - An information disclosure vulnerability exists when dumps created by the tool to collect crash dumps and
    dumps on demand are created with global read permissions on Linux and macOS. (CVE-2021-34485)

  - A denial of service vulnerability exists as server applications providing WebSocket endpoints can be
    tricked into endlessly looping while trying to read a single WebSocket frame. (CVE-2021-26423)

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/2.1");
  script_set_attribute(attribute:"see_also", value:"https://dotnet.microsoft.com/download/dotnet-core/3.1");
  script_set_attribute(attribute:"see_also", value:"https://dotnet.microsoft.com/download/dotnet/5.0");
  # https://github.com/dotnet/core/blob/main/release-notes/2.1/2.1.29/2.1.29.md
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8ff12246");
  # https://github.com/dotnet/core/blob/main/release-notes/3.1/3.1.18/3.1.18.md
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0933ffe1");
  # https://github.com/dotnet/core/blob/main/release-notes/5.0/5.0.9/5.0.9.md
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6242d65f");
  script_set_attribute(attribute:"see_also", value:"https://devblogs.microsoft.com/dotnet/net-august-2021/");
  script_set_attribute(attribute:"solution", value:
"Update .NET Core, remove vulnerable packages and refer to vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-34485");

  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:"2021/08/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/08/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/08/11");

  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:"MacOS X Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("macosx_dotnet_core_installed.nbin");
  script_require_keys("installed_sw/.NET Core MacOS");

  exit(0);
}

include('vcf.inc');

var app = '.NET Core MacOS';
var app_info = vcf::get_app_info(app:app);

var constraints = [
  { 'min_version' : '2.1', 'fixed_version' : '2.1.29' },
  { 'min_version' : '3.1', 'fixed_version' : '3.1.18' },
  { 'min_version' : '5.0', 'fixed_version' : '5.0.9' }
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_NOTE);