Microsoft Windows DNS Server Denial of Service Vulnerability (2647170)

# SPDX-FileCopyrightText: 2012 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("1.3.6.1.4.1.25623.1.0.902906");
  script_version("2026-04-28T06:28:06+0000");
  script_cve_id("CVE-2012-0006");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"last_modification", value:"2026-04-28 06:28:06 +0000 (Tue, 28 Apr 2026)");
  script_tag(name:"creation_date", value:"2012-03-14 08:31:02 +0530 (Wed, 14 Mar 2012)");
  script_name("Microsoft Windows DNS Server Denial of Service Vulnerability (2647170)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2012 Greenbone AG");
  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 remote attacker to execute arbitrary
  code or to cause the DNS server to stop responding or to restart.");

  script_tag(name:"affected", value:"- Microsoft Windows 2K3 Service Pack 2 and prior

  - Microsoft Windows Server 2008 Service Pack 2 and prior");

  script_tag(name:"insight", value:"The flaws are exists when Windows DNS server processing certain lookup
  queries and can be exploited to restart the DNS server.");

  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 an important security update according to
  Microsoft Bulletin MS12-017.");

  script_tag(name:"qod_type", value:"executable_version");
  script_tag(name:"solution_type", value:"VendorFix");

  script_xref(name:"URL", value:"http://support.microsoft.com/kb/2647170");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/52374");
  script_xref(name:"URL", value:"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-017");

  exit(0);
}

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

if(hotfix_check_sp(win2003:3, win2008:3) <= 0){
  exit(0);
}

if(!registry_key_exists(key:"SYSTEM\CurrentControlSet\Services\DNS")){
  exit(0);
}

## MS12-017 Hotfix 2647170
if((hotfix_missing(name:"2647170") == 0)){
  exit(0);
}

sysPath = smb_get_systemroot();
if(!sysPath ){
  exit(0);
}

sysVer = fetch_file_version(sysPath:sysPath, file_name:"system32\Dns.exe");
if(!sysVer){
  exit(0);
}

if(hotfix_check_sp(win2003:3) > 0)
{
  if(version_is_less(version:sysVer, test_version:"5.2.3790.4957")){
    security_message( port: 0, data: "The target host was found to be vulnerable" );
  }
  exit(0);
}

if(hotfix_check_sp(win2008:3) > 0)
{
  if(version_is_less(version:sysVer, test_version:"6.0.6002.18557")||
     version_in_range(version:sysVer, test_version:"6.0.6002.22000", test_version2:"6.0.6002.22762")){
    security_message( port: 0, data: "The target host was found to be vulnerable" );
  }
}