The Microsoft Exchange Server installed on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :
An elevation of privilege vulnerability exists in Microsoft Exchange Server. An attacker who successfully exploited this vulnerability could gain the same rights as any other user of the Exchange server. This could allow the attacker to perform activities such as accessing the mailboxes of other users. Exploitation of this vulnerability requires Exchange Web Services (EWS) to be enabled and in use in an affected environment.
(CVE-2020-0692)
A remote code execution vulnerability exists in Microsoft Exchange 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. An attacker could then install programs; view, change, or delete data; or create new accounts. Exploitation of the vulnerability requires that a specially crafted email be sent to a vulnerable Exchange server. The security update addresses the vulnerability by correcting how Microsoft Exchange handles objects in memory.
(CVE-2020-0688)
#%NASL_MIN_LEVEL 70300
#
# (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('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(133617);
script_version("1.20");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/01/19");
script_cve_id("CVE-2020-0688", "CVE-2020-0692");
script_xref(name:"MSKB", value:"4536987");
script_xref(name:"MSKB", value:"4536988");
script_xref(name:"MSKB", value:"4536989");
script_xref(name:"MSFT", value:"MS20-4536987");
script_xref(name:"MSFT", value:"MS20-4536988");
script_xref(name:"MSFT", value:"MS20-4536989");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/03");
script_xref(name:"CISA-NCAS", value:"AA22-011A");
script_xref(name:"CEA-ID", value:"CEA-2020-0122");
script_xref(name:"CEA-ID", value:"CEA-2020-0017");
script_xref(name:"CEA-ID", value:"CEA-2020-0129");
script_xref(name:"CEA-ID", value:"CEA-2020-0019");
script_name(english:"Security Updates for Exchange (February 2020)");
script_set_attribute(attribute:"synopsis", value:
"The Microsoft Exchange Server installed on the remote host is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The Microsoft Exchange Server installed on the remote host
is missing security updates. It is, therefore, affected by
multiple vulnerabilities :
- An elevation of privilege vulnerability exists in
Microsoft Exchange Server. An attacker who successfully
exploited this vulnerability could gain the same rights
as any other user of the Exchange server. This could
allow the attacker to perform activities such as
accessing the mailboxes of other users. Exploitation of
this vulnerability requires Exchange Web Services (EWS)
to be enabled and in use in an affected environment.
(CVE-2020-0692)
- A remote code execution vulnerability exists in
Microsoft Exchange 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. An
attacker could then install programs; view, change, or
delete data; or create new accounts. Exploitation of the
vulnerability requires that a specially crafted email be
sent to a vulnerable Exchange server. The security
update addresses the vulnerability by correcting how
Microsoft Exchange handles objects in memory.
(CVE-2020-0688)");
# https://support.microsoft.com/en-us/help/4536987/security-update-for-exchange-server-2019-and-2016
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cac6add1");
# https://support.microsoft.com/en-us/help/4536988/description-of-the-security-update-for-microsoft-exchange-server-2013
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?dce9375f");
# https://support.microsoft.com/en-us/help/4536989/security-update-for-exchange-server-2010
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b23bced2");
script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:
-KB4536987
-KB4536988
-KB4536989");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:L/PR:L/UI:N/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-2020-0688");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploit_framework_core", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'Exchange Control Panel ViewState Deserialization');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
script_set_attribute(attribute:"canvas_package", value:"CANVAS");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/11");
script_set_attribute(attribute:"patch_publication_date", value:"2020/02/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/02/11");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:exchange_server");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows : Microsoft Bulletins");
script_copyright(english:"This script is Copyright (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ms_bulletin_checks_possible.nasl", "microsoft_exchange_installed.nbin");
script_require_keys("SMB/MS_Bulletin_Checks/Possible");
script_require_ports(139, 445, "Host/patch_management_checks");
exit(0);
}
include('vcf_extras_microsoft.inc');
var app_info = vcf::microsoft::exchange::get_app_info();
var constraints =
[
{
'product' : '2010',
'min_version': '14.3.0.0',
'fixed_version': '14.03.496.0',
'kb': '4536989'
},
{
'product' : '2013',
'unsupported_cu' : 21,
'cu' : 23,
'min_version': '15.00.1497.0',
'fixed_version': '15.00.1497.6',
'kb': '4536988'
},
{
'product' : '2013',
'unsupported_cu' : 21,
'cu' : 22,
'min_version': '15.00.1497.0',
'fixed_version': '15.00.1497.6',
'kb': '4536988'
},
{
'product' : '2016',
'unsupported_cu' : 13,
'cu' : 15,
'min_version': '15.01.1913.0',
'fixed_version': '15.01.1913.7',
'kb': '4536987'
},
{
'product': '2016',
'unsupported_cu': 13,
'cu' : 14,
'min_version': '15.01.1847.0',
'fixed_version': '15.01.1847.7',
'kb': '4536987'
},
{
'product' : '2019',
'unsupported_cu' : 2,
'cu' : 3,
'min_version': '15.02.464.0',
'fixed_version': '15.02.464.11',
'kb': '4536987'
},
{
'product' : '2019',
'unsupported_cu' : 2,
'cu' : 4,
'min_version': '15.02.529.0',
'fixed_version': '15.02.529.8',
'kb': '4536987'
}
];
vcf::microsoft::exchange::check_version_and_report
(
app_info:app_info,
bulletin:'MS20-02',
constraints:constraints,
severity:SECURITY_WARNING
);
Vendor | Product | Version | CPE |
---|---|---|---|
microsoft | exchange_server | cpe:/a:microsoft:exchange_server |