Microsoft Live Meeting Add-in Remote Code Execution Vulnerability (KB4020736)

# SPDX-FileCopyrightText: 2017 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("1.3.6.1.4.1.25623.1.0.810947");
  script_version("2026-04-28T06:28:06+0000");
  script_cve_id("CVE-2017-0283");
  script_tag(name:"cvss_base", value:"9.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_tag(name:"last_modification", value:"2026-04-28 06:28:06 +0000 (Tue, 28 Apr 2026)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");
  script_tag(name:"creation_date", value:"2017-06-15 17:04:17 +0530 (Thu, 15 Jun 2017)");
  script_name("Microsoft Live Meeting Add-in Remote Code Execution Vulnerability (KB4020736)");

  script_tag(name:"summary", value:"This host is missing a critical security
  update according to Microsoft KB4020736.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"The flaw exists due the way Windows
  Uniscribe handles objects in memory.");

  script_tag(name:"impact", value:"Successful exploitation will allow a
  remote attacker to execute arbitrary code on the affected system and
  take control of the affected system.");

  script_tag(name:"affected", value:"Microsoft Live Meeting 2007 Add-in.");

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

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"executable_version");
  script_xref(name:"URL", value:"https://support.microsoft.com/en-us/kb/4020736");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/98920");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("smb_reg_service_pack.nasl");
  script_require_ports(139, 445);
  script_mandatory_keys("SMB/WindowsVersion");

  exit(0);
}

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

if(!path = registry_get_sz(key:"SOFTWARE\Microsoft\Windows\CurrentVersion",
                              item:"ProgramFilesDir")){
  exit(0);
}

filepath = path + "\Microsoft Office\Live Meeting 8\Addins";

if(!liveVer = fetch_file_version(sysPath:filepath, file_name:"lmaddins.dll")){
  exit(0);
}

if(version_is_less(version:liveVer, test_version:"8.0.6362.274"))
{
  report = 'File checked:     ' +  filepath + "\lmaddins.dll\n" +
           'File version:     ' +  liveVer  + '\n' +
           'Vulnerable range: Less than 8.0.6362.274\n' ;
  security_message(data:report);
  exit(0);
}