CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
AI Score
Confidence
Low
EPSS
Percentile
99.5%
This host is missing a critical security update according to Microsoft
Bulletin MS11-017.
# Copyright (C) 2011 Greenbone Networks GmbH
# 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-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# 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.
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.900273");
script_version("2022-05-25T07:40:23+0000");
script_tag(name:"last_modification", value:"2022-05-25 07:40:23 +0000 (Wed, 25 May 2022)");
script_tag(name:"creation_date", value:"2011-03-09 15:35:07 +0100 (Wed, 09 Mar 2011)");
script_cve_id("CVE-2011-0029");
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.securityfocus.com/bid/46678");
script_xref(name:"URL", value:"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-017");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2011 Greenbone Networks GmbH");
script_family("Windows : Microsoft Bulletins");
script_dependencies("secpod_reg_enum.nasl");
script_require_ports(139, 445);
script_mandatory_keys("SMB/registry_enumerated");
script_tag(name:"impact", value:"Successful exploitation could allow authenticated attackers to execute
arbitrary code with elevated privileges.");
script_tag(name:"insight", value:"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.");
script_tag(name:"solution", value:"The vendor has released updates. Please see the references for more information.");
script_tag(name:"summary", value:"This host is missing a critical security update according to Microsoft
Bulletin MS11-017.");
script_tag(name:"affected", value:"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");
script_tag(name:"qod_type", value:"executable_version");
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");
if(hotfix_check_sp(xp:4, win2003:3, winVista:3, win2008:3, win7:2) <= 0){
exit(0);
}
if((hotfix_missing(name:"2483618") == 0)||(hotfix_missing(name:"2481109") == 0)||
(hotfix_missing(name:"2483619") == 0)||(hotfix_missing(name:"2483614") == 0)){
exit(0);
}
sysPath = smb_get_systemroot();
if(!sysPath){
exit(0);
}
dllVer = fetch_file_version(sysPath:sysPath, file_name:"System32\Mstscax.dll");
if(!dllVer){
if(hotfix_check_sp(xp:4) > 0){
dllVer = fetch_file_version(sysPath:sysPath, file_name:"System32\2k3mstscax.dll");
} else{
exit(0);
}
if(!dllVer){
exit(0);
}
}
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( port: 0, data: "The target host was found to be vulnerable" );
}
exit(0);
}
security_message( port: 0, data: "The target host was found to be vulnerable" );
}
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( port: 0, data: "The target host was found to be vulnerable" );
}
exit(0);
}
security_message( port: 0, data: "The target host was found to be vulnerable" );
}
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( port: 0, data: "The target host was found to be vulnerable" );
}
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( port: 0, data: "The target host was found to be vulnerable" );
}
exit(0);
}
security_message( port: 0, data: "The target host was found to be vulnerable" );
}
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( port: 0, data: "The target host was found to be vulnerable" );
}
}