Microsoft Windows Kernel Elevation of Privilege Vulnerability (3199720)

# SPDX-FileCopyrightText: 2016 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("1.3.6.1.4.1.25623.1.0.809467");
  script_version("2023-07-20T05:05:17+0000");
  script_cve_id("CVE-2016-7216");
  script_tag(name:"cvss_base", value:"2.1");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:P/I:N/A:N");
  script_tag(name:"last_modification", value:"2023-07-20 05:05:17 +0000 (Thu, 20 Jul 2023)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-10-12 22:14:00 +0000 (Fri, 12 Oct 2018)");
  script_tag(name:"creation_date", value:"2016-11-09 10:39:43 +0530 (Wed, 09 Nov 2016)");
  script_tag(name:"qod_type", value:"executable_version");
  script_name("Microsoft Windows Kernel Elevation of Privilege Vulnerability (3199720)");

  script_tag(name:"summary", value:"This host is missing an important security
  update according to Microsoft Bulletin MS16-139.");

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

  script_tag(name:"insight", value:"The flaw exists in the way that the Windows
  Kernel API enforces permissions.");

  script_tag(name:"impact", value:"Successful exploitation will allow an attacker
  could gain access to information that is not intended for the user.");

  script_tag(name:"affected", value:"- Microsoft Windows Vista x32/x64 Edition Service Pack 2

  - Microsoft Windows Server 2008 x32/x64 Edition Service Pack 2

  - Microsoft Windows 7 x32/x64 Edition Service Pack 1

  - Microsoft Windows Server 2008 R2 x64 Edition Service Pack 1");

  script_tag(name:"solution", value:"The vendor has released updates. Please see the references for more information.");

  script_tag(name:"solution_type", value:"VendorFix");

  script_xref(name:"URL", value:"https://support.microsoft.com/en-us/kb/3199720");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/94048");
  script_xref(name:"URL", value:"https://technet.microsoft.com/library/security/MS16-139");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("smb_reg_service_pack.nasl");
  script_require_ports(139, 445);
  script_mandatory_keys("SMB/WindowsVersion");
  script_xref(name:"URL", value:"https://technet.microsoft.com/en-us/library/security/MS16-139");
  exit(0);
}

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

if(hotfix_check_sp(winVista:3, win7:2, win7x64:2, winVistax64:3, win2008:3, win2008x64:3,
                   win2008r2:2) <= 0){
  exit(0);
}

kerPath = smb_get_systemroot();
if(!kerPath ){
  exit(0);
}

kerVer = fetch_file_version(sysPath: kerPath, file_name:"System32\Ntoskrnl.exe");
if(!kerVer){
  exit(0);
}

if (kerVer =~ "^(6\.0\.6002\.1)"){
  Vulnerable_range = "Less than 6.0.6002.19700";
}
else if (kerVer =~ "^(6\.0\.6002\.2)"){
  Vulnerable_range = "6.0.6002.23000 - 6.0.6002.24023";
}
else if (kerVer =~ "^(6\.1\.7601)"){
  Vulnerable_range = "Less than 6.1.7601.23569";
}

if(hotfix_check_sp(winVista:3, winVistax64:3, win2008x64:3, win2008:3) > 0)
{
  if(version_is_less(version:kerVer, test_version:"6.0.6002.19700")||
     version_in_range(version:kerVer, test_version:"6.0.6002.23000", test_version2:"6.0.6002.24023")){
    VULN = TRUE ;
  }
}

else if(hotfix_check_sp(win7:2, win7x64:2, win2008r2:2) > 0)
{
  ## Presently GDR information is not available.
  if(version_is_less(version:kerVer, test_version:"6.1.7601.23569")){
    VULN = TRUE ;
  }
}

if(VULN)
{
  report = 'File checked:     ' + kerPath + "\system32\Ntoskrnl.exe" + '\n' +
           'File version:     ' + kerVer  + '\n' +
           'Vulnerable range: ' + Vulnerable_range + '\n' ;
  security_message(data:report);
  exit(0);
}
exit(0);