Security Updates for Microsoft Office Products (June 2020)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.
#

include('compat.inc');

if (description)
{
  script_id(137267);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/06/10");

  script_cve_id("CVE-2020-1229");
  script_xref(name:"MSKB", value:"4484342");
  script_xref(name:"MSKB", value:"4484351");
  script_xref(name:"MSKB", value:"4484373");
  script_xref(name:"MSKB", value:"4484378");
  script_xref(name:"MSFT", value:"MS20-4484342");
  script_xref(name:"MSFT", value:"MS20-4484351");
  script_xref(name:"MSFT", value:"MS20-4484373");
  script_xref(name:"MSFT", value:"MS20-4484378");
  script_xref(name:"IAVA", value:"2020-A-0255-S");

  script_name(english:"Security Updates for Microsoft Office Products (June 2020)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Office Products are missing a security update.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Office Products are missing a security update.
It is, therefore, affected by the following vulnerability :

  - A security feature bypass vulnerability exists in
    Microsoft Outlook when Office fails to enforce security
    settings configured on a system. An attacker who
    successfully exploited this vulnerability could cause a
    system to load remote images. These images could
    disclose the IP address of the targeted system to the
    attacker. Exploitation of the vulnerability requires
    that a user open a specially crafted image with an
    affected version of Microsoft Office software.
    (CVE-2020-1229)");
  # https://support.microsoft.com/en-us/help/4484378/security-update-for-office-2010-june-9-2020
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b4dcb740");
  # https://support.microsoft.com/en-us/help/4484373/security-update-for-office-2010-june-9-2020
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?89263810");
  # https://support.microsoft.com/en-us/help/4484342/security-update-for-office-2016-june-9-2020
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c31ba927");
  # https://support.microsoft.com/en-us/help/4484351/security-update-for-office-2013-june-9-2020
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?de8b10ec");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:  
  -KB4484342
  -KB4484351
  -KB4484373
  -KB4484378");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1229");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/06/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/06/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");

  script_copyright(english:"This script is Copyright (C) 2020-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("office_installed.nasl", "smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}
include('smb_func.inc');
include('smb_hotfixes.inc');
include('smb_hotfixes_fcheck.inc');
include('smb_reg_query.inc');
include('install_func.inc');

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = 'MS20-06';
kbs = make_list(
  '4484342',
  '4484351',
  '4484373',
  '4484378'
);

if (get_kb_item('Host/patch_management_checks'))
  hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_WARNING);

get_kb_item_or_exit('SMB/Registry/Enumerated', exit_code:1);

vuln = FALSE;
port = kb_smb_transport();

office_vers = hotfix_check_office_version();

# Office 2010 SP2
if (office_vers['14.0'])
{
  office_sp = get_kb_item('SMB/Office/2010/SP');
  if (!isnull(office_sp) && office_sp == 2)
  {
    prod = 'Microsoft Office 2010 SP2';
    path = hotfix_get_officecommonfilesdir(officever:'14.0');
    path = hotfix_append_path(path:path, value:'Microsoft Shared\\Office14');

    if (
      hotfix_check_fversion(file:'mso.dll', version:'14.0.7252.5000', path:path, kb:'4484373', bulletin:bulletin, product:prod) == HCF_OLDER ||
      hotfix_check_fversion(file:'wwlibcxm.dll', version:'14.0.7252.5000', path:path, kb:'4484378', bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;
  }
}

# Office 2013 SP1
if (office_vers['15.0'])
{
  office_sp = get_kb_item('SMB/Office/2013/SP');
  if (!isnull(office_sp) && office_sp == 1)
  {
    prod = 'Microsoft Office 2013 SP1';
    path = hotfix_get_officecommonfilesdir(officever:'15.0');
    path = hotfix_append_path(path:path, value:'Microsoft Shared\\Office15');
    kb = '4484351';
    file = 'mso.dll';
    version = '15.0.5249.1001';
    if (hotfix_check_fversion(file:file, version:version, path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER )
      vuln = TRUE;
  }
}

# Office 2016
if (office_vers['16.0'])
{
  office_sp = get_kb_item('SMB/Office/2016/SP');
  if (!isnull(office_sp) && office_sp == 0)
  {
    prod = 'Microsoft Office 2016';
    path = hotfix_get_officecommonfilesdir(officever:'16.0');
    path = hotfix_append_path(path:path, value:'Microsoft Shared\\Office16');
    kb = '4484342';
    file = 'mso.dll';
    version = '16.0.5017.1000';
    if (hotfix_check_fversion(file:file, version:version, channel:'MSI', channel_product:'Office', path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;

    prod2019 = 'Microsoft Office 2019';
    path = hotfix_get_officeprogramfilesdir(officever:'16.0');
    path = hotfix_append_path(path:path, value:'Microsoft Office\\root\\Office16');
  }
}

if (vuln)
{
  replace_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_warning();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}