Security Updates for Microsoft Office Compatibility Products (March 2018)

#
# (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(108297);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/12/11");

  script_cve_id("CVE-2018-0922");
  script_bugtraq_id(103314);
  script_xref(name:"MSKB", value:"4011720");
  script_xref(name:"IAVA", value:"2018-A-0077-S");
  script_xref(name:"MSFT", value:"MS18-4011720");

  script_name(english:"Security Updates for Microsoft Office Compatibility Products (March 2018)");
  script_summary(english:"Checks for Microsoft security updates.");

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

  - A remote code execution vulnerability exists in
    Microsoft Office software when the Office software fails
    to properly handle objects in memory. An attacker who
    successfully exploited the vulnerability could run
    arbitrary code in the context of the current user. If
    the current user is logged on with administrative user
    rights, an attacker could take control of the affected
    system. An attacker could then install programs; view,
    change, or delete data; or create new accounts with full
    user rights.  (CVE-2018-0922)");
  # https://support.microsoft.com/en-us/help/4011720/description-of-the-security-update-for-microsoft-office-compatibility
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?fa64c479");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released KB4011720 to address this issue.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-0922");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/13");

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

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

  script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("office_installed.nasl", "microsoft_office_compatibility_pack_installed.nbin", "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("misc_func.inc");
include("audit.inc");
include("smb_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = "MS18-03";
kbs = make_list('4011720');

vuln = FALSE;

if (get_kb_item("Host/patch_management_checks"))
  hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

####################################################################
#  Office Compatibility Pack
####################################################################
installs = get_kb_list("SMB/Office/WordCnv/*/ProductPath");
foreach install (keys(installs))
{
  path = installs[install];
  path = ereg_replace(pattern:'^(.+)\\\\[^\\\\]+\\.exe$', replace:"\1\", string:path, icase:TRUE);
  if(hotfix_check_fversion(path:path, file:"wordcnv.dll", version:"12.0.6786.5000", kb:"4011720", bulletin:bulletin, min_version:"12.0.0.0", product:"Microsoft Office Compatibility Pack") == HCF_OLDER)
    vuln = TRUE;
}

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