Security Update for .NET Core (March 2018) - Nessus

High Plugin ID: 108408

This page contains detailed information about the Security Update for .NET Core (March 2018) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 108408
Name: Security Update for .NET Core (March 2018)
Filename: smb_nt_ms18_mar_dotnet_core.nasl
Vulnerability Published: 2018-03-13
This Plugin Published: 2018-03-16
Last Modification Time: 2019-11-08
Plugin Version: 1.4
Plugin Type: local
Plugin Family: Windows
Dependencies: microsoft_dotnet_core_win.nbin
Required KB Items [?]: installed_sw/.NET Core Windows

Vulnerability Information

Severity: High
Vulnerability Published: 2018-03-13
Patch Published: 2018-03-13
CVE [?]: CVE-2018-0875
CPE [?]: cpe:/a:microsoft:.net_core

Synopsis

The remote Windows host is affected by a .NET Core runtime vulnerability.

Description

The remote Windows host has an installation of .NET Core with a version less than 2.0.6. Therefore, the host is affected by multiple vulnerabilities.

Solution

Update to .NET Core Runtime version 1.10 / 1.1.6 / 2.0.6 or later.

Public Exploits

Target Network Port(s): 139, 445
Target Asset(s): N/A
Exploit Available: True (GitHub)
Exploit Ease: Exploits (PoCs) are available

Here's the list of publicly known exploits and PoCs for verifying the Security Update for .NET Core (March 2018) vulnerability:

GitHub: https://github.com/omajid/Turkey
[CVE-2018-0875]
GitHub: https://github.com/redhat-developer/dotnet-bunny
[CVE-2018-0875]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS Score Source [?]: CVE-2018-0875
CVSS V2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P/E:U/RL:OF/RC:C

CVSS Base Score:	5.0 (Medium)
Impact Subscore:	2.9
Exploitability Subscore:	10.0
CVSS Temporal Score:	3.7 (Low)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	3.7 (Low)

CVSS V3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

CVSS Base Score:	7.5 (High)
Impact Subscore:	3.6
Exploitability Subscore:	3.9
CVSS Temporal Score:	6.5 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.5 (Medium)

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Plugin Source

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.
#
include("compat.inc");

if (description)
{
  script_id(108408);
  script_version("1.4");
  script_cvs_date("Date: 2019/11/08");

  script_cve_id("CVE-2018-0875");
  script_bugtraq_id(103225);

  script_name(english:"Security Update for .NET Core (March 2018)");
  script_summary(english:"Checks for Windows Install of .NET Core.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by a .NET Core runtime
vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host has an installation of .NET Core
with a version less than 2.0.6. Therefore, the host is affected
by multiple vulnerabilities.");
  # https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0875
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f0fc5e53");
  # https://github.com/dotnet/core/blob/master/release-notes/2.0/2.0.6.md
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b0803131");
  # https://github.com/dotnet/core/blob/master/release-notes/1.1/1.1.7.md
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bc72caf1");
  # https://github.com/dotnet/core/blob/master/release-notes/1.0/1.0.10.md
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5f659e90");
  script_set_attribute(attribute:"solution", value:
"Update to .NET Core Runtime version 1.10 / 1.1.6 / 2.0.6 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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-2018-0875");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/16");

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

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

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("microsoft_dotnet_core_win.nbin");
  script_require_keys("installed_sw/.NET Core Windows");
  script_require_ports(139, 445);

  exit(0);
}

include("global_settings.inc");
include("audit.inc");
include("install_func.inc");
include("misc_func.inc");
include("smb_func.inc");

appname = '.NET Core Windows';
port = kb_smb_transport();

installs = get_installs(app_name:appname, exit_if_not_found:TRUE);

report = '';

foreach install (installs[1])
{
  version = install['version'];
  path = install['path'];

  fix = '';
  # Affected: 1.0.x < 1.0.10 / 1.1.x < 1.1.7 / 2.0.x < 2.0.6
  if      (version =~ '^2\\.0\\.') fix = '2.0.6.26212';
  else if (version =~ '^1\\.1\\.') fix = '1.1.7.1667';
  else if (version =~ '^1\\.0\\.') fix = '1.0.10.5023';

  if (fix != '' && ver_compare(ver:version, fix:fix) < 0)
  {
    report +=
      '\n  Path              : ' + path +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : ' + fix +
      '\n';
  }
}

if (report != '')
  security_report_v4(port:port, severity:SECURITY_WARNING, extra:report);
else 
  audit(AUDIT_INST_VER_NOT_VULN, appname);

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/smb_nt_ms18_mar_dotnet_core.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\smb_nt_ms18_mar_dotnet_core.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/smb_nt_ms18_mar_dotnet_core.nasl

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How to Run

Here is how to run the Security Update for .NET Core (March 2018) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select Windows plugin family.
On the right side table select Security Update for .NET Core (March 2018) plugin ID 108408.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl smb_nt_ms18_mar_dotnet_core.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a smb_nt_ms18_mar_dotnet_core.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - smb_nt_ms18_mar_dotnet_core.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state smb_nt_ms18_mar_dotnet_core.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

103225

See also:

Similar and related Nessus plugins:

108395 - RHEL 7 : .NET Core on Red Hat Enterprise Linux (RHSA-2018:0522)
147724 - Security Update for Microsoft Visual Studio Code ESLint Extension (March 2021)
138523 - Security Update for Microsoft Visual Studio Code ESLint Extension (July 2020)
146417 - Security Update for Microsoft Visual Studio Code npm-script Extension (Feb 2021)
149384 - Security Update for Microsoft Visual Studio Code Remote Containers Extension (May 2021)
156113 - Security Update for Microsoft Visual Studio Code Remote WSL Extension (December 2021)
126630 - Security Updates for Microsoft SQL Server (Uncredentialed Check) (July 2019)
125164 - Security Update for Microsoft ASP.NET Core (DoS) (May 2019)
125217 - Security Update for .NET Core (May 2019)
125225 - Security Update for .NET Core SDK (May 2019)
131318 - Security Update for Microsoft Visual Studio Code (CVE-2019-1414)
128770 - Security Update for Microsoft ASP.NET Core (Sep 2019)
128771 - Security Update for .NET Core (Sep 2019)
128772 - Security Update for .NET Core SDK (Sep 2019)
133718 - Security Updates for Microsoft SQL Server (Uncredentialed Check) (February 2020)
132993 - Security Update for .NET Core (January 2020)
132994 - Security Update for .NET Core SDK (January 2020)
138465 - Security Update for .NET Core (July 2020)
138466 - Security Update for .NET Core SDK (July 2020)
141931 - Security Update for Microsoft Visual Studio Code (CVE-2020-17023)
152428 - Security Update for Microsoft Azure Active Directory Connect (August 2021)
146332 - Security Update for Forefront Endpoint Protection (February 2021)
146334 - Security Update for Windows Defender (February 2021)
153214 - Security Updates for Microsoft Internet Explorer OOB (Sept 2021) (deprecated)
144886 - Security Update for Forefront Endpoint Protection (January 2021)
144876 - Security Update for Windows Defender (January 2021)
155962 - Security Updates for Exchange (November 2021) (Remote)
157879 - Security Update for .NET Core (February 2022)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file smb_nt_ms18_mar_dotnet_core.nasl version 1.4. For more plugins, visit the Nessus Plugin Library.

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Security Update for .NET Core (March 2018) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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