Microsoft .NET Framework Privilege Elevation Vulnerability (3086251)

# 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("1.3.6.1.4.1.25623.1.0.805952");
  script_version("2023-07-25T05:05:58+0000");
  script_cve_id("CVE-2015-2479", "CVE-2015-2480", "CVE-2015-2481");
  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:"2023-07-25 05:05:58 +0000 (Tue, 25 Jul 2023)");
  script_tag(name:"creation_date", value:"2015-08-12 12:08:40 +0530 (Wed, 12 Aug 2015)");
  script_name("Microsoft .NET Framework Privilege Elevation Vulnerability (3086251)");

  script_tag(name:"summary", value:"This host is missing an important security
  update according to Microsoft Bulletin MS15-092.");

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

  script_tag(name:"insight", value:"Flaw exists due to error in RyuJIT compiler
  which improperly optimizes certain parameters resulting in a code generation
  error.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote
  attackers to take complete control of an affected system.");

  script_tag(name:"affected", value:"Microsoft .NET Framework 4.6.");

  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_tag(name:"qod_type", value:"executable_version");

  script_xref(name:"URL", value:"https://support.microsoft.com/en-us/kb/3083185");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/76268");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/76269");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/76270");
  script_xref(name:"URL", value:"https://support.microsoft.com/en-us/kb/3083184");
  script_xref(name:"URL", value:"https://support.microsoft.com/en-us/kb/3083186");
  script_xref(name:"URL", value:"https://technet.microsoft.com/library/security/MS15-092");

  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_mandatory_keys("SMB/WindowsVersion");
  script_require_ports(139, 445);

  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, win2008:3, win2008r2:2,
                   win8:1, win8x64:1, win8_1:1, win8_1x64:1, win2012:1,
                   win2012R2:1, win10:1, win10x64:1) <= 0){
  exit(0);
}

key = "SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full";
if(!registry_key_exists(key:key)){
  exit(0);
}

version = registry_get_sz(key:key, item:"Version");
if(!version){
  exit(0);
}

if(version =~ "^4\.6\.")
{
  path = registry_get_sz(key:key, item:"InstallPath");
  if(path && "Microsoft.NET" >< path)
  {
    dllVer = fetch_file_version(sysPath:path, file_name:"mscorlib.dll");
    if(dllVer)
    {
      if((hotfix_check_sp(winVista:3, win2008:3, win7:2, win7x64:2, win2008r2:2) > 0) &&
         (version_is_less(version:dllVer, test_version:"4.6.100.0")))
      {
        security_message( port: 0, data: "The target host was found to be vulnerable" );
        exit(0);
      }

      if((hotfix_check_sp(win8:1, win8x64:1, win2012:1, win8_1:1, win8_1x64:1,
          win2012R2:1, win10:1, win10x64:1) > 0) &&
        (version_is_less(version:dllVer, test_version:"4.6.96.0")))
      {
        security_message( port: 0, data: "The target host was found to be vulnerable" );
        exit(0);
      }
    }
  }
}