Microsoft Windows Kerberos Denial of Service Vulnerability (2743555)

###############################################################################
# OpenVAS Vulnerability Test
# $Id: secpod_ms12-069.nasl 5351 2017-02-20 08:03:12Z mwiegand $
#
# Microsoft Windows Kerberos Denial of Service Vulnerability (2743555)
#
# Authors:
# Sharath S <[email protected]>
#
# Copyright:
# Copyright (c) 2012 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_impact = "Successful exploitation could allow authenticated attackers to cause a denial
  of service condition on the affected system.
  Impact Level: System";
tag_affected = "Microsoft Windows 7 Service Pack 1 and prior
  Microsoft Windows 2008 R2 Service Pack 1 and prior";
tag_insight = "The flaw is present due to an error in Kerberos implementation which fails to
  properly handle a specially crafted session.";
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/ms12-069.mspx";
tag_summary = "This host is missing an important security update according to
  Microsoft Bulletin MS12-069.";

if(description)
{
  script_id(901301);
  script_version("$Revision: 5351 $");
  script_cve_id("CVE-2012-2551");
  script_bugtraq_id(55778);
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"last_modification", value:"$Date: 2017-02-20 09:03:12 +0100 (Mon, 20 Feb 2017) $");
  script_tag(name:"creation_date", value:"2012-10-10 09:58:54 +0530 (Wed, 10 Oct 2012)");
  script_name("Microsoft Windows Kerberos Denial of Service Vulnerability (2743555)");
  script_xref(name : "URL" , value : "http://secunia.com/advisories/50867/");
  script_xref(name : "URL" , value : "http://support.microsoft.com/kb/2425227");
  script_xref(name : "URL" , value : "http://www.microsoft.com/technet/security/bulletin/ms12-069.mspx");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2012 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 : "affected" , value : tag_affected);
  script_tag(name : "insight" , value : tag_insight);
  script_tag(name : "solution" , value : tag_solution);
  script_tag(name : "summary" , value : tag_summary);
  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");

## Variables Initialization
sysPath = "";
sysVer = "";

## Check for OS and Service Pack
if(hotfix_check_sp(win2008r2:2, win7:2, win7x64:2) <= 0){
  exit(0);
}

## Get System Path
sysPath = smb_get_systemroot();
if(!sysPath){
  exit(0);
}

## Get Version from Kerberos.dll file
sysVer = fetch_file_version(sysPath, file_name:"system32\Kerberos.dll");
if(!sysVer){
  exit(0);
}

## Windows 2008 R2 and Windows 7
if(hotfix_check_sp(win2008r2:2, win7:2, win7x64:2) > 0)
{
  ## Check for Kerberos.dll version
  if(version_is_less(version:sysVer, test_version:"6.1.7600.17095") ||
     version_in_range(version:sysVer, test_version:"6.1.7600.20000", test_version2:"6.1.7600.21297") ||
     version_in_range(version:sysVer, test_version:"6.1.7601.10000", test_version2:"6.1.7601.17925") ||
     version_in_range(version:sysVer, test_version:"6.1.7601.20000", test_version2:"6.1.7601.22083")) {
    security_message(0);
  }
}