Microsoft Remote Desktop Client Remote Code Execution Vulnerability (2508062)

###############################################################################
# OpenVAS Vulnerability Test
# $Id: secpod_ms11-017.nasl 5362 2017-02-20 12:46:39Z cfi $
#
# Microsoft Remote Desktop Client Remote Code Execution Vulnerability (2508062)
#
# Authors:
# Veerendra GG <[email protected]>
#
# Copyright:
# Copyright (c) 2011 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_affected = "Remote Desktop Connection 5.2 Client
  - Windows XP Service Pack 3 and prior

  Remote Desktop Connection 6.0/6.1 Client
  - Windows XP Service Pack 3
  - Windows Vista Service Pack 2 and prior
  - Windows Server 2003 Service Pack 2 and prior
  - Windows Server 2008 Service Pack 2 and prior

  Remote Desktop Connection 7.0 Client
  - Windows 7
  - Windows XP Service Pack 3 and prior
  - Windows Vista Service Pack 2 and prior";

tag_impact = "Successful exploitation could allow authenticated attackers to execute
  arbitrary code with elevated privileges.
  Impact Level: System";
tag_insight = "The flaw is caused by the way Windows Remote Desktop Client handles loading
  of DLL files. Remote attacker can execute arbitrary code by tricking a user
  to open a legitimate Remote Desktop configuration file (.rdp) that
  is located in the same network directory as a specially crafted dynamic
  link library (DLL) file.";
tag_solution = "Run Windows Update and update the listed hotfixes or download and
  update mentioned hotfixes in the advisory from the below link,
  http://www.microsoft.com/technet/security/Bulletin/MS11-017.mspx";
tag_summary = "This host is missing a critical security update according to Microsoft
  Bulletin MS11-017.";

if(description)
{
  script_id(900273);
  script_version("$Revision: 5362 $");
  script_tag(name:"last_modification", value:"$Date: 2017-02-20 13:46:39 +0100 (Mon, 20 Feb 2017) $");
  script_tag(name:"creation_date", value:"2011-03-09 15:35:07 +0100 (Wed, 09 Mar 2011)");
  script_cve_id("CVE-2011-0029");
  script_bugtraq_id(46678);
  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_name("Microsoft Remote Desktop Client Remote Code Execution Vulnerability (2508062)");
  script_xref(name : "URL" , value : "http://secunia.com/advisories/43628");
  script_xref(name : "URL" , value : "http://www.microsoft.com/technet/security/Bulletin/MS11-017.mspx");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2011 SecPod");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("secpod_reg_enum.nasl");
  script_require_ports(139, 445);
  script_mandatory_keys("SMB/WindowsVersion");

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


include("smb_nt.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, win7:2) <= 0){
  exit(0);
}

## Check for MS11-017 Hotfix
if((hotfix_missing(name:"2483618") == 0)||(hotfix_missing(name:"2481109") == 0)||
   (hotfix_missing(name:"2483619") == 0)||(hotfix_missing(name:"2483614") == 0)){
  exit(0);
}

## Get the system32 directory
sysPath = smb_get_systemroot();
if(!sysPath){
  exit(0);
}

## Get the file version
dllVer = fetch_file_version(sysPath, file_name:"System32\Mstscax.dll");
if(!dllVer){
  if(hotfix_check_sp(xp:4) > 0){
    dllVer = fetch_file_version(sysPath, file_name:"System32\2k3mstscax.dll");
  } else{
    exit(0);
  }

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

## Windows XP
if(hotfix_check_sp(xp:4) > 0)
{
  SP = get_kb_item("SMB/WinXP/ServicePack");
  if("Service Pack 3" >< SP)
  {

    ## 2k3mstscax.dll 5.2.3790.4807 SP3GDR and SP3QFE for 5.2 version
    ## MSTSCAX.dll 6.0.6001.18589 SP3GDR and 6.0.6001.22840 SP3QFE for 6.0 version
    ## MSTSCAX.dll 6.1.7600.16722 SP3GDR and 6.1.7600.20861 SP3QFE for 7.0 version
    if(version_is_less(version:dllVer, test_version:"5.2.3790.4807")||
       version_in_range(version:dllVer, test_version:"6.0.6001.18000", test_version2:"6.0.6001.18588")||
       version_in_range(version:dllVer, test_version:"6.0.6001.22000", test_version2:"6.0.6001.22839")||
       version_in_range(version:dllVer, test_version:"6.1.7600.16000", test_version2:"6.1.7600.16721")||
       version_in_range(version:dllVer, test_version:"6.1.7600.20000", test_version2:"6.1.7600.20860")){
      security_message(0);
    }
    exit(0);
  }
  security_message(0);
}

## Windows 2003
else if(hotfix_check_sp(winVista:3) > 0)
{
  SP = get_kb_item("SMB/Win2003/ServicePack");
  if("Service Pack 2" >< SP)
  {
    ## MSTSCAX.dll 6.0.6001.18564 SP3GDR and 6.0.6001.22815 SP3QFE for 6.1 version
    ## Ignoring (MUI) for RDP, as the file path is having KB number and some random character
    if( version_in_range(version:dllVer, test_version:"6.0.6001.18000", test_version2:"6.0.6001.18563")||
        version_in_range(version:dllVer, test_version:"6.0.6001.22000", test_version2:"6.0.6001.22814")){
      security_message(0);
    }
    exit(0);
  }
  security_message(0);
}

## Windows Vista and Windows 2008
if(hotfix_check_sp(winVista:3, win2008:3) > 0)
{
  SP = get_kb_item("SMB/WinVista/ServicePack");
  if(!SP){
    SP = get_kb_item("SMB/Win2008/ServicePack");
  }
  if("Service Pack 1" >< SP)
  {
    ## MSTSCAX.dll 6.0.6001.18564 SP1GDR and 6.0.6001.22815 SP1QFE for 6.0 version
    ## MSTSCAX.dll 6.1.7600.16722 SP1GDR and 6.1.7600.20861 SP1QFE for 7.0 version
    if( version_in_range(version:dllVer, test_version:"6.0.6001.18000", test_version2:"6.0.6001.18563")||
        version_in_range(version:dllVer, test_version:"6.0.6001.22000", test_version2:"6.0.6001.22814")||
        version_in_range(version:dllVer, test_version:"6.1.7600.16000", test_version2:"6.1.7600.16721")||
        version_in_range(version:dllVer, test_version:"6.1.7600.20000", test_version2:"6.1.7600.20860")){
      security_message(0);
    }
     exit(0);
  }

  if("Service Pack 2" >< SP)
  {
    ## MSTSCAX.dll 6.0.6002.18356 SP2GDR and 6.0.6002.22550 SP2QFE for 6.1 version
    ## MSTSCAX.dll 6.1.7600.16722 SP1GDR and 6.1.7600.20861 SP1QFE for 7.0 version
    if( version_in_range(version:dllVer, test_version:"6.0.6002.18000", test_version2:"6.0.6002.18355")||
        version_in_range(version:dllVer, test_version:"6.0.6002.22000", test_version2:"6.0.6002.22549")||
        version_in_range(version:dllVer, test_version:"6.1.7600.16000", test_version2:"6.1.7600.16721")||
        version_in_range(version:dllVer, test_version:"6.1.7600.20000", test_version2:"6.1.7600.20860")){
      security_message(0);
    }
     exit(0);
  }
   security_message(0);
}

## Windows 7
else if(hotfix_check_sp(win7:2) > 0)
{
  ## MSTSCAX.dll 6.1.7600.16722 SP1GDR and 6.1.7600.20861 SP1QFE for 7.0 version
  if(version_in_range(version:dllVer, test_version:"6.1.7600.16000", test_version2:"6.1.7600.16721")||
     version_in_range(version:dllVer, test_version:"6.1.7600.20000", test_version2:"6.1.7600.20860")){
    security_message(0);
  }
}