Vulnerabilities > CVE-2018-0850 - Unspecified vulnerability in Microsoft Office and Outlook

047910
CVSS 6.5 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
HIGH
Availability impact
NONE
network
low complexity
microsoft
nessus

Summary

Microsoft Outlook 2007, Microsoft Outlook 2010, Microsoft Outlook 2013, Microsoft Outlook 2016, and Microsoft Office 2016 Click-to-Run allow an elevation of privilege vulnerability due to how the format of incoming message is validated, aka "Microsoft Outlook Elevation of Privilege Vulnerability".

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS18_FEB_OUTLOOK.NASL
descriptionThe Microsoft Outlook application installed on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities : - An elevation of privilege vulnerability exists when Microsoft Outlook initiates processing of incoming messages without sufficient validation of the formatting of the messages. An attacker who successfully exploited the vulnerability could attempt to force Outlook to load a local or remote message store (over SMB). (CVE-2018-0850) - A remote code execution vulnerability exists in Microsoft Outlook when the 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-2018-0852)
last seen2020-06-01
modified2020-06-02
plugin id106807
published2018-02-13
reporterThis script is Copyright (C) 2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/106807
titleSecurity Updates for Outlook (February 2018)
code
#
# (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(106807);
  script_version("1.5");
  script_cvs_date("Date: 2018/07/30 15:31:34");

  script_cve_id("CVE-2018-0850", "CVE-2018-0852");
  script_bugtraq_id(102866, 102871);
  script_xref(name:"MSKB", value:"4011682");
  script_xref(name:"MSKB", value:"4011697");
  script_xref(name:"MSKB", value:"4011711");
  script_xref(name:"MSKB", value:"4011200");
  script_xref(name:"MSFT", value:"MS18-4011682");
  script_xref(name:"MSFT", value:"MS18-4011697");
  script_xref(name:"MSFT", value:"MS18-4011711");
  script_xref(name:"MSFT", value:"MS18-4011200");
  script_xref(name:"IAVA", value:"2018-A-0051");

  script_name(english:"Security Updates for Outlook (February 2018)");
  script_summary(english:"Checks for Microsoft security updates.");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Outlook application installed on the remote host is
affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Outlook application installed on the remote
host is missing security updates. It is, therefore, affected
by multiple vulnerabilities :

  - An elevation of privilege vulnerability exists when
    Microsoft Outlook initiates processing of incoming
    messages without sufficient validation of the formatting
    of the messages. An attacker who successfully exploited
    the vulnerability could attempt to force Outlook to load
    a local or remote message store (over SMB).
    (CVE-2018-0850)

  - A remote code execution vulnerability exists in
    Microsoft Outlook when the 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-2018-0852)");
  # https://support.microsoft.com/en-us/help/4011682/descriptionofthesecurityupdateforoutlook2016february13-2018
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f0d84fef");
  # https://support.microsoft.com/en-us/help/4011697/descriptionofthesecurityupdateforoutlook2013february13-2018
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4444a3b8");
  # https://support.microsoft.com/en-us/help/4011711/descriptionofthesecurityupdateforoutlook2010february13-2018
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?13b4a7cf");
  # https://support.microsoft.com/en-us/help/4011200/descriptionofthesecurityupdateforoutlook2007february13-2018
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7de39c82");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this
issue:
  - KB4011682
  - KB4011697
  - KB4011711
  - KB4011200");
  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:N/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:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/02/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/02/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/13");
  script_set_attribute(attribute:"plugin_type",value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:outlook");
  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) 2018 Tenable Network Security, Inc.");

  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("audit.inc");
include("smb_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");
include("smb_reg_query.inc");
include("misc_func.inc");
include("install_func.inc");

global_var vuln;

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = "MS18-02";
kbs = make_list(
  '4011200', # 2007 SP3 / 12.0
  '4011711', # 2010 SP2 / 14.0
  '4011697', # 2013 SP1 / 15.0
  '4011682'  # 2016     / 16.0
);
kb16 = '4011682';

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

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

port = kb_smb_transport();

######################################################################
# Outlook 2007, 2010, 2013, 2016
######################################################################
function perform_outlook_checks()
{
  local_var vuln, checks, path;
  vuln = 0;
  checks = make_array(
    "12.0", make_array("version", "12.0.6785.5000", "kb", "4011200"), # 2007
    "14.0", make_array("version", "14.0.7194.5000", "kb", "4011711"), # 2010
    "15.0", make_array("version", "15.0.5007.1000", "kb", "4011697"), # 2013
    "16.0", make_nested_list(
      make_array("version", "16.0.4654.1000", "channel", "MSI", "kb", kb16), # 2016
      make_array("version", "16.0.9001.2171", "channel", "Current", "kb", kb16), # Monthly
      make_array("version", "16.0.8431.2215", "channel", "First Release for Deferred", "kb", kb16), # Targeted
      make_array("version", "16.0.8431.2215", "channel", "Deferred", "channel_version", "1708", "kb", kb16), # Semi-Annual
      make_array("version", "16.0.8201.2258", "channel", "Deferred", "kb", kb16) # Deferred
    )
  );
  if (hotfix_check_office_product(product:"Outlook", checks:checks, bulletin:bulletin))
    vuln += 1;

  return vuln;
}


######################################################################
# MAIN
######################################################################
vuln = perform_outlook_checks();

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');
}

The Hacker News

idTHN:8EB1C13E9267C775EC95FD2028F422C4
last seen2018-02-14
modified2018-02-14
published2018-02-13
reporterMohit Kumar
sourcehttps://thehackernews.com/2018/02/microsoft-patch-update.html
titleMicrosoft Issues Security Patch Update for 14 New Critical Vulnerabilities