Microsoft Excel 2007 Service Pack 3 Remote Code Execution Vulnerability (KB4011062)

# 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("1.3.6.1.4.1.25623.1.0.811754");
  script_version("2026-04-28T06:28:06+0000");
  script_cve_id("CVE-2017-8631");
  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:3.1/AV:L/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:"2021-09-13 11:26:00 +0000 (Mon, 13 Sep 2021)");
  script_tag(name:"creation_date", value:"2017-09-13 11:19:30 +0530 (Wed, 13 Sep 2017)");
  script_name("Microsoft Excel 2007 Service Pack 3 Remote Code Execution Vulnerability (KB4011062)");

  script_tag(name:"summary", value:"This host is missing an important security
  update according to Microsoft KB4011062");

  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 to an error in Microsoft
  Office software when it fails to properly handle objects in memory.");

  script_tag(name:"impact", value:"Successful exploitation will allow an attacker
  who successfully exploited the vulnerability to use a specially crafted file
  to perform actions in the security context of the current user.");

  script_tag(name:"affected", value:"Microsoft Excel 2007 Service Pack 3.");

  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/help/4011062");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/100751");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("secpod_office_products_version_900032.nasl");
  script_mandatory_keys("SMB/Office/Excel/Version");

  exit(0);
}


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

excelVer = get_kb_item("SMB/Office/Excel/Version");
if(!excelVer){
  exit(0);
}

excelPath = get_kb_item("SMB/Office/Excel/Install/Path");
if(!excelPath){
  excelPath = "Unable to fetch the install path";
}

if(excelVer =~ "^(12\.)" && version_is_less(version:excelVer, test_version:"12.0.6776.5000"))
{
  report = 'File checked:     ' + excelPath + "Excel.exe" + '\n' +
           'File version:     ' + excelVer  + '\n' +
           'Vulnerable range: ' + "12.0 - 12.0.6776.4999" + '\n' ;
  security_message(data:report);
  exit(0);
}
exit(0);