Microsoft Windows DNS Memory Corruption Vulnerability (Mar 2009)

# SPDX-FileCopyrightText: 2009 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("1.3.6.1.4.1.25623.1.0.900465");
  script_version("2026-04-28T06:28:06+0000");
  script_tag(name:"last_modification", value:"2026-04-28 06:28:06 +0000 (Tue, 28 Apr 2026)");
  script_tag(name:"creation_date", value:"2009-03-05 06:25:55 +0100 (Thu, 05 Mar 2009)");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_cve_id("CVE-2008-6194");
  script_name("Microsoft Windows DNS Memory Corruption Vulnerability (Mar 2009)");
  script_xref(name:"URL", value:"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-062");
  script_xref(name:"URL", value:"http://www.securityfocus.com/archive/1/archive/1/491831/100/0/threaded");
  script_xref(name:"URL", value:"http://www.securityfocus.com/archive/1/archive/1/491815/100/0/threaded");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_family("Windows");
  script_dependencies("smb_reg_service_pack.nasl");
  script_mandatory_keys("SMB/WindowsVersion");
  script_require_ports(139, 445);

  script_tag(name:"affected", value:"Microsoft Windows Server 2000 and 2003.");

  script_tag(name:"insight", value:"This flaw is due to memory leak vulnerability in Microsoft Windows DNS
  Server through DNS packets.");

  script_tag(name:"solution", value:"The vendor has released updates. Please see the references for more information.");

  script_tag(name:"summary", value:"Microsoft Windows is prone to a DNS memory corruption vulnerability.");

  script_tag(name:"impact", value:"Successful exploitation will let the attacker execute arbitrary codes in
  the context of the application and can cause memory corruption in the DNS
  service.");

  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");

if(!get_kb_item("SMB/WindowsVersion")){
  exit(0);
}

if(hotfix_check_sp(win2k:5, win2003:3) <= 0){
  exit(0);
}

sys32Path = registry_get_sz(key:"SOFTWARE\Microsoft\COM3\Setup",
                            item:"Install Path");
if(!sys32Path){
  exit(0);
}

share = ereg_replace(pattern:"([A-Z]):.*", replace:"\1$", string:sys32Path);
file = ereg_replace(pattern:"[A-Z]:(.*)", replace:"\1", string:sys32Path + "\dns.exe");

dnsVer = GetVer(file:file, share:share);
if(dnsVer != NULL)
{
  if(get_kb_item("SMB/Win2K/ServicePack")) # Win-2000 SP4 and prior
  {
    if(version_is_less_equal(version:dnsVer, test_version:"5.0.2195.7147")){
      report = report_fixed_ver(installed_version:dnsVer, vulnerable_range:"Less than or equal to 5.0.2195.7147");
      security_message(port: 0, data: report);
    }
    exit(0);
  }

  SP = get_kb_item("SMB/Win2003/ServicePack");
  if("Service Pack 1" >< SP) # Win-2003 SP1
  {
    if(version_is_less_equal(version:dnsVer, test_version:"5.2.3790.3027")){
      report = report_fixed_ver(installed_version:dnsVer, vulnerable_range:"Less than or equal to 5.2.3790.3027");
      security_message(port: 0, data: report);
    }
    exit(0);
  }
  else if("Service Pack 2" >< SP) # Win-2003 SP2
  {
    if(version_is_less_equal(version:dnsVer, test_version:"5.2.3790.4171")){
      report = report_fixed_ver(installed_version:dnsVer, vulnerable_range:"Less than or equal to 5.2.3790.4171");
      security_message(port: 0, data: report);
    }
    exit(0);
  }
  security_message( port: 0, data: "The target host was found to be vulnerable" );
}