Microsoft Malware Protection Engine RCE Vulnerability (Jul 2017)

# SPDX-FileCopyrightText: 2017 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.811491");
  script_version("2026-04-28T06:28:06+0000");
  script_cve_id("CVE-2017-8558");
  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:"2026-04-28 06:28:06 +0000 (Tue, 28 Apr 2026)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");
  script_tag(name:"creation_date", value:"2017-07-14 13:56:02 +0530 (Fri, 14 Jul 2017)");
  script_tag(name:"qod_type", value:"executable_version");
  script_name("Microsoft Malware Protection Engine RCE Vulnerability (Jul 2017)");

  script_tag(name:"summary", value:"malware protection engine is prone to a remote code execution
  (RCE) vulnerability.");

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

  script_tag(name:"insight", value:"The flaw exists as the Microsoft Malware
  Protection Engine does not properly scan a specially crafted file leading to
  memory corruption.");

  script_tag(name:"impact", value:"Successful exploitation will allow an attacker
  to execute arbitrary code in the security context of the LocalSystem account and
  take control of the system. An attacker could then install programs. View, change,
  or delete data, or create new accounts with full user rights.");

  script_tag(name:"affected", value:"- Microsoft Windows 7

  - Microsoft Windows 8.1

  - Microsoft Windows 10 x32

  - Microsoft Windows Server 2008 SP2

  - Microsoft Windows 10 Version 1511 x32

  - Microsoft Windows 10 Version 1607 x32

  - Microsoft Windows 10 Version 1703 x32");

  script_tag(name:"solution", value:"Microsoft Malware Protection Engine's built-in
  mechanism for the automatic detection and deployment of updates will apply the
  update within 48 hours of release.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_xref(name:"URL", value:"https://support.microsoft.com/en-us/help/2510781");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/99262");
  script_xref(name:"URL", value:"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8558");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("smb_reg_service_pack.nasl", "gb_ms_defender_smb_login_detect.nasl");

  script_mandatory_keys("SMB/WindowsVersion", "microsoft/defender/mpe_version");
  exit(0);
}

include("smb_nt.inc");
include("secpod_reg.inc");
include("version_func.inc");

if(hotfix_check_sp(win7:2, win2008:3, win8_1:1, win10:1) <= 0){
  exit(0);
}

mpe_version = get_kb_item("microsoft/defender/mpe_version");
if(!mpe_version)
  exit(0);

##First version of the Microsoft Malware Protection Engine with this vulnerability addressed
if(version_is_less(version:mpe_version, test_version:"1.1.13903.0"))
{
   report = 'Installed version : ' + mpe_version + '\n' +
            'Vulnerable range: Less than 1.1.13903.0';
   security_message(data:report);
   exit(0);
}
exit(0);