Microsoft Windows Hyper-V Security Feature Bypass Vulnerability (3091287)

# SPDX-FileCopyrightText: 2015 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("1.3.6.1.4.1.25623.1.0.806046");
  script_version("2023-07-25T05:05:58+0000");
  script_cve_id("CVE-2015-2534");
  script_tag(name:"cvss_base", value:"1.9");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:M/Au:N/C:N/I:P/A:N");
  script_tag(name:"last_modification", value:"2023-07-25 05:05:58 +0000 (Tue, 25 Jul 2023)");
  script_tag(name:"creation_date", value:"2015-09-09 12:21:46 +0530 (Wed, 09 Sep 2015)");
  script_tag(name:"qod_type", value:"executable_version");
  script_name("Microsoft Windows Hyper-V Security Feature Bypass Vulnerability (3091287)");

  script_tag(name:"summary", value:"This host is missing an important security
  update according to Microsoft Bulletin MS15-105.");

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

  script_tag(name:"insight", value:"The flaw is due to an improper use of access
  control lists.");

  script_tag(name:"impact", value:"Successful exploitation will allow
  attacker to bypass network access control lists, allowing the attacker
  to gain unauthorized access to network resources.");

  script_tag(name:"affected", value:"- Microsoft Windows 8.1 x64

  - Microsoft Windows 10 x64

  - Microsoft Windows Server 2012R2");

  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/3087088");
  script_xref(name:"URL", value:"https://technet.microsoft.com/library/security/MS15-105");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2015 Greenbone AG");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("smb_reg_service_pack.nasl");
  script_require_ports(139, 445);
  script_mandatory_keys("SMB/WindowsVersion");
  exit(0);
}

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

if(hotfix_check_sp(win8_1x64:1, win2012R2:1, win10x64:1) <= 0){
  exit(0);
}

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

dllVer = fetch_file_version(sysPath:sysPath, file_name:"system32\Vmsif.dll");
if(!dllVer){
  exit(0);
}

## Win 8.1 x64 and win2012R2
if(hotfix_check_sp(win8_1x64:1, win2012R2:1) > 0)
{
  if(version_is_less(version:dllVer, test_version:"6.3.9600.17396"))
  {
    Vulnerable_range = "Less than 6.3.9600.17396";
    VULN = TRUE ;
  }
}

##  Windows 10
else if(hotfix_check_sp(win10x64:1) > 0)
{
  if(version_is_less(version:dllVer, test_version:"10.0.10240.16384"))
  {
    Vulnerable_range = "Less than 10.0.10240.16384";
    VULN = TRUE ;
  }
}

if(VULN)
{
  report = 'File checked:     ' + sysPath + "\system32\Vmsif.dll" + '\n' +
           'File version:     ' + dllVer  + '\n' +
           'Vulnerable range: ' + Vulnerable_range + '\n' ;
  security_message(data:report);
  exit(0);
}