This host is missing an important security
update according to Microsoft KB4018196
###############################################################################
# OpenVAS Vulnerability Test
#
# Microsoft Windows DNS Server Denial of Service Vulnerability (KB4018196)
#
# Authors:
# Kashinath T <[email protected]>
#
# Copyright:
# Copyright (C) 2017 Greenbone Networks GmbH, http://www.greenbone.net
#
# 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.
###############################################################################
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.811115");
script_version("2020-06-04T12:11:49+0000");
script_cve_id("CVE-2017-0171");
script_bugtraq_id(98097);
script_tag(name:"cvss_base", value:"4.3");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:N/A:P");
script_tag(name:"last_modification", value:"2020-06-04 12:11:49 +0000 (Thu, 04 Jun 2020)");
script_tag(name:"creation_date", value:"2017-05-10 12:41:18 +0530 (Wed, 10 May 2017)");
script_tag(name:"qod_type", value:"executable_version");
script_name("Microsoft Windows DNS Server Denial of Service Vulnerability (KB4018196)");
script_tag(name:"summary", value:"This host is missing an important security
update according to Microsoft KB4018196");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"The flaw exists when the server is
configured to answer version queries. An attacker who successfully exploited
this vulnerability could cause the DNS Server service to become nonresponsive.");
script_tag(name:"impact", value:"Successful exploitation will allow remote
attcker to send malicious DNS queries, which results in denial of service.");
script_tag(name:"affected", value:"Microsoft Windows Server 2008 x32/x64 Edition Service Pack 2.");
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-gb/help/4018196");
script_xref(name:"URL", value:"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0171");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2017 Greenbone Networks GmbH");
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(win2008:3, win2008x64:3) <= 0){
exit(0);
}
sysPath = smb_get_system32root();
if(!sysPath ){
exit(0);
}
if(!asVer = fetch_file_version(sysPath:sysPath, file_name:"Dns.exe")){
exit(0);
}
if(version_is_less(version:asVer, test_version:"6.0.6002.19765"))
{
Vulnerable_range = "Less than 6.0.6002.19765";
VULN = TRUE ;
}
else if(version_in_range(version:asVer, test_version:"6.0.6002.23000", test_version2:"6.0.6002.24088"))
{
Vulnerable_range = "6.0.6002.23000 - 6.0.6002.24088";
VULN = TRUE ;
}
if(VULN)
{
report = 'File checked: ' + sysPath + "\Dns.exe" + '\n' +
'File version: ' + asVer + '\n' +
'Vulnerable range: ' + Vulnerable_range + '\n' ;
security_message(data:report);
exit(0);
}
exit(0);