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Microsoft PowerPoint 2013 SP1 RCE Vulnerability (KB4493227)

🗓️ 10 Mar 2021 00:00:00Reported by Copyright (C) 2021 Greenbone Networks GmbHType 
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This host is missing an important security update for Microsoft PowerPoint 2013 SP1 RCE Vulnerability (KB4493227). The vulnerability allows remote code execution

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Code
# Copyright (C) 2021 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("1.3.6.1.4.1.25623.1.0.817679");
  script_version("2023-03-07T10:19:54+0000");
  script_cve_id("CVE-2021-27056");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_tag(name:"last_modification", value:"2023-03-07 10:19:54 +0000 (Tue, 07 Mar 2023)");
  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:"2021-03-23 14:33:00 +0000 (Tue, 23 Mar 2021)");
  script_tag(name:"creation_date", value:"2021-03-10 08:24:35 +0530 (Wed, 10 Mar 2021)");
  script_name("Microsoft PowerPoint 2013 SP1 RCE Vulnerability (KB4493227)");

  script_tag(name:"summary", value:"This host is missing an important security
  update according to Microsoft KB4493227.");

  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 presence of remote code
  execution flaws in Microsoft PowerPoint");

  script_tag(name:"impact", value:"Successful exploitation will allow an attacker
  to execute arbitrary code.");

  script_tag(name:"affected", value:"Microsoft PowerPoint 2013 SP1.");

  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/4493227");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("secpod_office_products_version_900032.nasl");
  script_mandatory_keys("SMB/Office/PowerPnt/Version", "MS/Office/Ver");
  script_require_ports(139, 445);
  exit(0);
}

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

pptVer = get_kb_item("SMB/Office/PowerPnt/Version");
if(!pptVer)
  exit(0);

if(!os_arch = get_kb_item("SMB/Windows/Arch"))
  exit(0);

if("x86" >< os_arch)
  key_list = make_list("SOFTWARE\Microsoft\Windows\CurrentVersion");

else if("x64" >< os_arch)
  key_list = make_list("SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion",
                       "SOFTWARE\Microsoft\Windows\CurrentVersion");

foreach key(key_list) {
  commonpath = registry_get_sz(key:key, item:"ProgramFilesDir");
  if(!commonpath)
    continue;

  offPath = commonpath + "\Microsoft Office\OFFICE15" ;
  exeVer  = fetch_file_version(sysPath:offPath, file_name:"ppcore.dll");
  if(!exeVer)
    exit(0);

  if(exeVer =~ "^15\." && version_is_less(version:exeVer, test_version:"15.0.5325.1000")) {
    report = report_fixed_ver(file_checked:offPath + "\ppcore.dll", file_version:exeVer, vulnerable_range:"15.0 - 15.0.5325.0999");
    security_message(port:0, data:report);
    exit(0);
  }
}

exit(99);

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10 Mar 2021 00:00Current
7.5High risk
Vulners AI Score7.5
CVSS37.8
EPSS0.009
9
.json
Report