MS Windows Client/Server Run-time Subsystem Privilege Escalation Vulnerability (2646524)

###############################################################################
# OpenVAS Vulnerability Test
# $Id: secpod_ms12-003.nasl 5366 2017-02-20 13:55:38Z cfi $
#
# MS Windows Client/Server Run-time Subsystem Privilege Escalation Vulnerability (2646524)
#
# Authors:
# Antu Sanadi <[email protected]>
#
# Updated By: Madhuri D <[email protected]> on 2012-02-09
#  - Used Wmi function to get locale information.
#
# Copyright:
# Copyright (c) 2012 SecPod, http://www.secpod.com
#
# 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.
###############################################################################

tag_insight = "The flaw is due to an error in the Client/Server Run-time Subsystem
  (CSRSS) when processing specially crafted sequences of unicode characters.

  NOTE : This vulnerability can only be exploited on systems configured with
  a Chinese, Japanese or Korean system locale.";

tag_impact = "Successful exploitation could allow attacker to execute arbitrary code with
  system-level privileges. Successfully exploiting this issue will result in
  the complete compromise of affected computers.
  Impact Level: System";
tag_affected = "Microsoft Windows XP Service Pack 3 and prior.
  Microsoft Windows 2003 Service Pack 2 and prior.
  Microsoft Windows Vista Service Pack 2 and prior.
  Microsoft Windows Server 2008 Service Pack 2 and prior.";
tag_solution = "Run Windows Update and update the listed hotfixes or download and
  update mentioned hotfixes in the advisory from the below link,
  http://technet.microsoft.com/en-us/security/bulletin/ms12-003";
tag_summary = "This host is missing an important security update according to
  Microsoft Bulletin MS12-003.";

if(description)
{
  script_id(902499);
  script_version("$Revision: 5366 $");
  script_cve_id("CVE-2012-0005");
  script_bugtraq_id(51270);
  script_tag(name:"cvss_base", value:"6.9");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_tag(name:"last_modification", value:"$Date: 2017-02-20 14:55:38 +0100 (Mon, 20 Feb 2017) $");
  script_tag(name:"creation_date", value:"2012-01-11 08:42:52 +0530 (Wed, 11 Jan 2012)");
  script_name("MS Windows Client/Server Run-time Subsystem Privilege Escalation Vulnerability (2646524)");
  script_xref(name : "URL" , value : "http://secunia.com/advisories/47479/");
  script_xref(name : "URL" , value : "http://support.microsoft.com/kb/2646524");
  script_xref(name : "URL" , value : "http://technet.microsoft.com/en-us/security/bulletin/ms12-003");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2012 SecPod");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("secpod_reg_enum.nasl","smb_login.nasl");
  script_require_ports(139, 445);
  script_require_keys("SMB/login","SMB/password");
  script_mandatory_keys("SMB/WindowsVersion");

  script_tag(name : "impact" , value : tag_impact);
  script_tag(name : "affected" , value : tag_affected);
  script_tag(name : "solution" , value : tag_solution);
  script_tag(name : "summary" , value : tag_summary);
  script_tag(name : "insight" , value : tag_insight);
  script_tag(name:"qod_type", value:"registry");
  script_tag(name:"solution_type", value:"VendorFix");
  exit(0);
}

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

## Check for OS and Service Pack
if(hotfix_check_sp(xp:4, win2003:3, winVista:3, win2008:3) <= 0){
  exit(0);
}

## MS12-003 Hotfix (2646524)
if(hotfix_missing(name:"2646524") == 0){
  exit(0);
}

## Variables Initialization
host = "";
usrname = "";
passwd = "";
handle = "";
sysPath = "";
sysVer = "";
windows_info = "";

host    = get_host_ip();
usrname = get_kb_item("SMB/login");
passwd  = get_kb_item("SMB/password");

if(!host || !usrname || !passwd){
  exit(0);
}

## Get the handle to execute wmi query
handle = wmi_connect(host:host, username:usrname, password:passwd);

if(!handle){
  exit(0);
}

## Get the all information of windows s/m
windows_info = wmi_os_all(handle:handle);

## close wmi connection
wmi_close(wmi_handle:handle);

if(!windows_info){
  exit(0);
}

## Checking for locale code
## Chinese = 0404, 0804, 0C04, 1004, 1404
## Japanese = 0411
## Korean = 0412
if("Locale = 0404" >< windows_info || "Locale = 0804" >< windows_info ||
   "Locale = 0C04" >< windows_info || "Locale = 1004" >< windows_info ||
   "Locale = 1404" >< windows_info || "Locale = 0411" >< windows_info ||
   "Locale = 0412" >< windows_info)
{
  ## Get System Path
  sysPath = smb_get_systemroot();
  if(!sysPath){
    exit(0);
  }

  ## Get Version from winsrv.dll file
  sysVer = fetch_file_version(sysPath, file_name:"system32\winsrv.dll");
  if(sysVer)
  {
    ## Windows XP
    if(hotfix_check_sp(xp:4) > 0)
    {
      ## Check for winsrv.dll version < 5.1.2600.6179
      if(version_is_less(version:sysVer, test_version:"5.1.2600.6179")){
        security_message(0);
      }
      exit(0);
    }

    ## Windows 2003
    else if(hotfix_check_sp(win2003:3) > 0)
    {
      ## Check for winsrv.dll version < 5.2.3790.4940
      if(version_is_less(version:sysVer, test_version:"5.2.3790.4940")){
        security_message(0);
      }
      exit(0);
    }

    ## Windows Vista and Windows Server 2008
    else if(hotfix_check_sp(winVista:3, win2008:3) > 0)
    {
      ## Check for winsrv.dll version
      if(version_in_range(version:sysVer, test_version:"6.0.6002.18000", test_version2:"6.0.6002.18544")||
         version_in_range(version:sysVer, test_version:"6.0.6002.22000", test_version2:"6.0.6002.22746")){
        security_message(0);
      }
    }
  }
}