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nessusThis script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.SMB_NT_MS20_OCT_OUTLOOK.NASL
HistoryOct 13, 2020 - 12:00 a.m.

Security Updates for Outlook (October 2020)

2020-10-1300:00:00
This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
31

7 High

AI Score

Confidence

High

The Microsoft Outlook application installed on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :

  • A remote code execution vulnerability exists in Microsoft Outlook software 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 System 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-2020-16947)

  • A denial of service vulnerability exists in Microsoft Outlook software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could cause a remote denial of service against a system. Exploitation of the vulnerability requires that a specially crafted email be sent to a vulnerable Outlook server. The security update addresses the vulnerability by correcting how Microsoft Outlook handles objects in memory. (CVE-2020-16949)

##
# (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(141428);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/15");

  script_cve_id("CVE-2020-16947", "CVE-2020-16949");
  script_xref(name:"MSKB", value:"4484524");
  script_xref(name:"MSKB", value:"4486663");
  script_xref(name:"MSKB", value:"4486671");
  script_xref(name:"MSFT", value:"MS20-4484524");
  script_xref(name:"MSFT", value:"MS20-4486663");
  script_xref(name:"MSFT", value:"MS20-4486671");
  script_xref(name:"IAVA", value:"2020-A-0455-S");
  script_xref(name:"CEA-ID", value:"CEA-2020-0126");

  script_name(english:"Security Updates for Outlook (October 2020)");

  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 :

  - A remote code execution vulnerability exists in
    Microsoft Outlook software 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 System 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-2020-16947)

  - A denial of service vulnerability exists in Microsoft
    Outlook software when the software fails to properly
    handle objects in memory. An attacker who successfully
    exploited the vulnerability could cause a remote denial
    of service against a system. Exploitation of the
    vulnerability requires that a specially crafted email be
    sent to a vulnerable Outlook server. The security update
    addresses the vulnerability by correcting how Microsoft
    Outlook handles objects in memory. (CVE-2020-16949)");
  # https://support.microsoft.com/en-us/help/4484524/security-update-for-outlook-2013-october-13-2020
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5dd4e480");
  # https://support.microsoft.com/en-us/help/4486663/security-update-for-outlook-2010-october-13-2020
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?37225f14");
  # https://support.microsoft.com/en-us/help/4486671/security-update-for-outlook-2016-october-13-2020
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5499b1ef");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:  
  -KB4484524
  -KB4486663
  -KB4486671

For Office 365, Office 2016 C2R, or Office 2019, ensure automatic
updates are enabled or open any office app and manually perform an
update.");
  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:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-16947");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/10/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/10/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/10/13");

  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:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2020-2024 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 = 'MS20-10';
kbs = make_list(
  '4484524',
  '4486663',
  '4486671'
);

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();

checks = make_array(

  '14.0', make_array('sp', 2, 'version', '14.0.7261.5000', 'kb', '4486663'),
  '15.0', make_array('sp', 1, 'version', '15.0.5285.1000', 'kb', '4484524'),
  '16.0', make_nested_list(make_array('sp', 0, 'version', '16.0.5071.1000', 'channel', 'MSI', 'kb', '4486671'),
    make_array('version', '16.0.12527.21236', 'channel', 'Deferred','channel_version', '2002'),
    make_array('version', '16.0.11929.20966', 'channel', 'Deferred'),
    make_array('version', '16.0.13029.20708', 'channel', 'Enterprise Deferred'),
    make_array('version', '16.0.13127.20638', 'channel', 'Enterprise Deferred', 'channel_version', '2008'),
    make_array('version', '16.0.13127.20638', 'channel', 'First Release for Deferred'),
    make_array('version', '16.0.13231.20390', 'channel', 'Current'),
    # 2019 & Windows 7 365 temp fix 
    make_array('version', '16.0.13231.20390', 'channel', '2019 Retail'),
    make_array('version', '16.0.13231.20390', 'channel', '2019 Retail', 'channel_version', '2004'),
    make_array('version', '16.0.12527.21236', 'channel', '2019 Retail', 'channel_version', '2002'),
    make_array('version', '16.0.10367.20048', 'channel', '2019 Volume')
  )
);

if (hotfix_check_office_product(product:'Outlook', checks:checks, bulletin:bulletin))
{
  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');
}
VendorProductVersion
microsoftoutlook

7 High

AI Score

Confidence

High