Microsoft PowerShell Core RCE and Tampering Vulnerabilities (Mac OS X)

2018-11-15T00:00:00
ID OPENVAS:1361412562310814183
Type openvas
Reporter Copyright (C) 2018 Greenbone Networks GmbH
Modified 2019-05-03T00:00:00

Description

This host is installed with PowerShell Core and is prone to remote code execution and tampering vulnerabilities.

                                        
                                            ###############################################################################
# OpenVAS Vulnerability Test
#
# Microsoft PowerShell Core RCE and Tampering Vulnerabilities (Mac OS X)
#
# Authors:
# Antu Sanadi <santu@secpod.com>
#
# Copyright:
# Copyright (C) 2018 Greenbone Networks GmbH, http://www.greenbone.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
###############################################################################

CPE = "cpe:/a:microsoft:powershell";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.814183");
  script_version("2019-05-03T08:55:39+0000");
  script_cve_id("CVE-2018-8256", "CVE-2018-8415");
  script_tag(name:"cvss_base", value:"9.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_tag(name:"last_modification", value:"2019-05-03 08:55:39 +0000 (Fri, 03 May 2019)");
  script_tag(name:"creation_date", value:"2018-11-15 11:13:29 +0530 (Thu, 15 Nov 2018)");
  script_name("Microsoft PowerShell Core RCE and Tampering Vulnerabilities (Mac OS X)");

  script_tag(name:"summary", value:"This host is installed with PowerShell Core and is
  prone to remote code execution and tampering vulnerabilities.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present
  on the target host.");

  script_tag(name:"insight", value:"A remote code execution vulnerability exists
  when PowerShell improperly handles specially crafted files.

  A tampering vulnerability exists in PowerShell that could allow an attacker
  to execute unlogged code.");

  script_tag(name:"impact", value:"Successful exploitation will allow attackers
  to execute malicious code on a vulnerable system and to bypass certain security
  restrictions and perform unauthorized actions.");

  script_tag(name:"affected", value:"PowerShell Core versions 6.0 to 6.0.4 and 6.1 on Mac OS X.");

  script_tag(name:"solution", value:"Upgrade to PowerShell Core 6.0.5 or 6.1.1 or later. Please see the references for more information.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"executable_version");
  script_xref(name:"URL", value:"https://github.com/PowerShell/PowerShell");
  script_xref(name:"URL", value:"https://www.securitytracker.com/id/1042108");
  script_xref(name:"URL", value:"https://github.com/PowerShell/Announcements/issues/8");
  script_xref(name:"URL", value:"https://github.com/PowerShell/Announcements/issues/9");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 Greenbone Networks GmbH");
  script_family("General");
  script_dependencies("gb_powershell_core_detect_macosx.nasl");
  script_mandatory_keys("PowerShell/MacOSX/Version");
  exit(0);
}


include("version_func.inc");
include("host_details.inc");

if(!infos = get_app_version_and_location(cpe:CPE, exit_no_version:TRUE)) exit(0);
psVer = infos['version'];
psPath = infos['location'];

if(psVer == "6.1"){
  fix = "6.1.1";
}

else if(version_in_range(version:psVer, test_version:"6.0", test_version2:"6.0.4")){
  fix = "6.0.5";
}

if(fix)
{
  report = report_fixed_ver(installed_version:psVer, fixed_version:fix, install_path:psPath);
  security_message(data:report);
  exit(0);
}
exit(99);