Microsoft Exchange and Windows SMTP Service Denial of Service Vulnerability (981832)

# SPDX-FileCopyrightText: 2010 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("1.3.6.1.4.1.25623.1.0.900240");
  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:"2010-04-23 17:57:39 +0200 (Fri, 23 Apr 2010)");
  script_cve_id("CVE-2010-0024", "CVE-2010-0025");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_name("Microsoft Exchange and Windows SMTP Service Denial of Service Vulnerability (981832)");
  script_xref(name:"URL", value:"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-024");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/39308");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/39381");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2010 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 lead to Denial of Service.");

  script_tag(name:"affected", value:"- Microsoft Windows 2K  Service Pack 4 and prior

  - Microsoft Windows XP  Service Pack 3 and prior

  - Microsoft Windows 2K3 Service Pack 2 and prior

  - Microsoft Exchange Server 2000 Service Pack 3

  - Microsoft Exchange Server 2003 Service Pack 2");

  script_tag(name:"insight", value:"An error exists MS Windows Simple Mail Transfer Protocol (SMTP) component,

  - while handling specially crafted DNS Mail Exchanger (MX) resource records.

  - due to the manner in which the SMTP component handles memory allocation");

  script_tag(name:"summary", value:"This host is missing a critical security update according to
  Microsoft Bulletin MS10-024.");

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

  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(hotfix_check_sp(xp:4, win2k:5, win2003:3) <= 0){
  exit(0);
}

smtpPath = registry_get_sz(key:"SOFTWARE\Microsoft\InetStp", item:"InstallPath");
## SMTP Patch Check
if(smtpPath)
{
  ## Hotfix is missing in registry (1 means missing)
  if(hotfix_missing(name:"976323") == 1)
  {
    share = ereg_replace(pattern:"([A-Z]):.*", replace:"\1$", string:smtpPath);
    file = ereg_replace(pattern:"[A-Z]:(.*)", replace:"\1", string:smtpPath + "\smtpsvc.dll");
    exeVer = GetVer(file:file, share:share);

    if(exeVer)
    {
      if(hotfix_check_sp(win2k:5) > 0)
      {
        if(version_is_less(version:exeVer, test_version:"5.0.2195.7381")){
          security_message( port: 0, data: "The target host was found to be vulnerable" );
          exit(0);
        }
      }

      else if(hotfix_check_sp(xp:4) > 0)
      {
        SP = get_kb_item("SMB/WinXP/ServicePack");
        if("Service Pack 2" >< SP)
        {
          if(version_is_less(version:exeVer, test_version:"6.0.2600.3680")){
            security_message( port: 0, data: "The target host was found to be vulnerable" );
            exit(0);
          }
        }
        else if("Service Pack 3" >< SP)
        {
          if(version_is_less(version:exeVer, test_version:"6.0.2600.5949")){
            security_message( port: 0, data: "The target host was found to be vulnerable" );
            exit(0);
          }
        }
      }

      else if(hotfix_check_sp(win2003:3) > 0)
      {
        SP = get_kb_item("SMB/Win2003/ServicePack");
        if("Service Pack 2" >< SP)
        {
          if(version_is_less(version:exeVer, test_version:"6.0.3790.4675")){
            security_message( port: 0, data: "The target host was found to be vulnerable" );
            exit(0);
          }
        }
      }
    }
  }
}

exchangePath = registry_get_sz(key:"SOFTWARE\Microsoft\Exchange\Setup", item:"Services");
## Microsoft Exchange Patch Check
if(exchangePath)
{
  ## MS10-024 Hotfix check in registry
  if(hotfix_missing(name:"976703") == 0 || hotfix_missing(name:"976702") == 0){
    exit(0);
  }

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

  share = ereg_replace(pattern:"([A-Z]):.*", replace:"\1$", string:exePath);
  file = ereg_replace(pattern:"[A-Z]:(.*)", replace:"\1", string:exePath + "\exspmsg.dll");
  fileVersion = GetVer(file:file, share:share);

  if(!fileVersion)
  {
    common_exspmsg_file = FALSE;
    share = ereg_replace(pattern:"([A-Z]):.*", replace:"\1$", string:exchangePath);
    file = ereg_replace(pattern:"[A-Z]:(.*)", replace:"\1", string:exchangePath + "\bin\Msgfilter.dll");
    fileVersion = GetVer(file:file, share:share);
  }

  if(!fileVersion){
    exit(0);
  }

  ## If common exspmsg.dll file is present
  if(common_exspmsg_file)
  {
    if(version_in_range(version:fileVersion, test_version:"6.5", test_version2:"6.5.7233.40")){
      security_message( port: 0, data: "The target host was found to be vulnerable" );
    }
  }
  else
  {
    if(version_in_range(version:fileVersion, test_version:"6.5", test_version2:"6.5.7656.1")){
      security_message( port: 0, data: "The target host was found to be vulnerable" );
    }
  }
}