Microsoft .NET Framework XML HMAC Truncation Vulnerability (981343)

# Copyright (C) 2010 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("1.3.6.1.4.1.25623.1.0.902193");
  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:"2010-06-09 17:19:57 +0200 (Wed, 09 Jun 2010)");
  script_cve_id("CVE-2009-0217");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:P/A:N");
  script_name("Microsoft .NET Framework XML HMAC Truncation Vulnerability (981343)");
  script_xref(name:"URL", value:"http://support.microsoft.com/kb/981343");
  script_xref(name:"URL", value:"http://www.vupen.com/english/advisories/2010/1398");
  script_xref(name:"URL", value:"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-041");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2010 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 will allow the attackers to forge an XML signature that
  will be accepted as valid or to bypass security restrictions.");
  script_tag(name:"affected", value:"- Microsoft .NET Framework 3.5/SP 1

  - Microsoft .NET Framework 1.1 SP 1

  - Microsoft .NET Framework 1.0 SP 3

  - Microsoft .NET Framework 2.0 SP 1/SP 2");
  script_tag(name:"insight", value:"The issue is caused by an error in the XML Signature Syntax and Processing
  (XMLDsig) implementation that rely on the 'HMACOutputLength' parameter to
  determine the number of bytes of the signature to be verified.");
  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 MS10-041.");
  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");
include("http_func.inc");

if(hotfix_check_sp(xp:4, win2k:5, win2003:3,  winVista:3, win2008:3, win7:1) <= 0){
  exit(0);
}

# MS10-041 Hotfix check
if((hotfix_missing(name:"979907") == 0)|| (hotfix_missing(name:"979906") == 0)||
   (hotfix_missing(name:"979909") == 0)|| (hotfix_missing(name:"979904") == 0)||
   (hotfix_missing(name:"982865") == 0)|| (hotfix_missing(name:"979913") == 0)||
   (hotfix_missing(name:"979911") == 0)|| (hotfix_missing(name:"979910") == 0)||
   (hotfix_missing(name:"979916") == 0 )){
    exit(0);
}

key  = "SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls\";
if(registry_key_exists(key:key))
{
  foreach dllPath (registry_enum_values(key:key))
  {
    if((".NET" >< dllPath) && ("System.Security.dll" >< dllPath))
    {
      share = ereg_replace(pattern:"([a-zA-Z]):.*", replace:"\1$", string:dllPath);
      file = ereg_replace(pattern:"[a-zA-Z]:(.*)", replace:"\1", string:dllPath);

      dllVer = GetVer(file:file, share:toupper(share));
      if(!isnull(dllVer))
      {
        if(version_in_range(version:dllVer, test_version:"1.1",test_version2:"1.1.4322.2462")||
           version_in_range(version:dllVer, test_version:"2.0.50727.1000",test_version2:"2.0.50727.1878")||
           version_in_range(version:dllVer, test_version:"2.0.50727.4000",test_version2:"2.0.50727.4433"))
        {
          security_message( port: 0, data: "The target host was found to be vulnerable" );
          exit(0);
        }
      }
    }
  }
}

key = "SOFTWARE\Microsoft\ASP.NET\";
if(!registry_key_exists(key:key)){
  exit(0);
}

foreach item (registry_enum_keys(key:key))
{
  path = registry_get_sz(key:key + item, item:"Path");
  if("\Microsoft.NET\Framework" >< path)
  {
    dllVer = fetch_file_version(sysPath:path, file_name:"system.security.dll");
    if(dllVer)
    {
      if(hotfix_check_sp(winVista:3, win2008:3) > 0)
      {
        if(version_in_range(version:dllVer, test_version:"1.1",test_version2:"1.1.4322.2462")||
           version_in_range(version:dllVer, test_version:"2.0.50727.1000", test_version2:"2.0.50727.1877")||
           version_in_range(version:dllVer, test_version:"2.0.50727.3000", test_version2:"2.0.50727.3612")||
           version_in_range(version:dllVer, test_version:"2.0.50727.4000", test_version2:"2.0.50727.4203")||
           version_in_range(version:dllVer, test_version:"2.0.50727.4400", test_version2:"2.0.50727.4433"))
        {
          security_message( port: 0, data: "The target host was found to be vulnerable" );
          exit(0);
        }
      }

      if(hotfix_check_sp(win7:1) > 0)
      {
        if(version_in_range(version:dllVer, test_version:"2.0.50727.4000", test_version2:"2.0.50727.4950")||
           version_in_range(version:dllVer, test_version:"2.0.50727.5000", test_version2:"2.0.50727.5006"))
        {
          security_message( port: 0, data: "The target host was found to be vulnerable" );
          exit(0);
        }
      }
    }
  }
}