The Microsoft Excel Products are missing security updates.
It is, therefore, affected by multiple vulnerabilities:
A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2020-17123, CVE-2020-17125, CVE-2020-17127, CVE-2020-17128, CVE-2020-17129)
An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2020-17126)
A security feature bypass vulnerability exists. An attacker can exploit this and bypass the security feature and perform unauthorized actions compromising the integrity of the system/application.
(CVE-2020-17130)
#
# (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(162119);
script_version("1.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/25");
script_cve_id(
"CVE-2020-17123",
"CVE-2020-17125",
"CVE-2020-17126",
"CVE-2020-17127",
"CVE-2020-17128",
"CVE-2020-17129",
"CVE-2020-17130"
);
script_xref(name:"IAVA", value:"2020-A-0556-S");
script_xref(name:"IAVA", value:"2021-A-0017-S");
script_xref(name:"CEA-ID", value:"CEA-2020-0138");
script_name(english:"Security Updates for Microsoft Excel Products C2R (December 2020)");
script_set_attribute(attribute:"synopsis", value:
"The Microsoft Excel Products are affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The Microsoft Excel Products are missing security updates.
It is, therefore, affected by multiple vulnerabilities:
- A remote code execution vulnerability. An attacker can
exploit this to bypass authentication and execute
unauthorized arbitrary commands. (CVE-2020-17123,
CVE-2020-17125, CVE-2020-17127, CVE-2020-17128,
CVE-2020-17129)
- An information disclosure vulnerability. An attacker can
exploit this to disclose potentially sensitive
information. (CVE-2020-17126)
- A security feature bypass vulnerability exists. An
attacker can exploit this and bypass the security
feature and perform unauthorized actions compromising
the integrity of the system/application.
(CVE-2020-17130)");
# https://docs.microsoft.com/en-us/officeupdates/update-history-microsoft365-apps-by-date
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?fd4508ff");
script_set_attribute(attribute:"solution", value:
"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: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-2020-17129");
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:"2020/12/08");
script_set_attribute(attribute:"patch_publication_date", value:"2020/12/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/06/10");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:excel");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows");
script_copyright(english:"This script is Copyright (C) 2022-2023 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('vcf_extras_office.inc');
var bulletin = 'MS20-12';
var constraints = [
{'fixed_version':'16.0.12527.21416','channel': 'Microsoft 365 Apps on Windows 7'},
{'fixed_version':'16.0.12527.21416','channel': 'Deferred','channel_version': '2002'},
{'fixed_version':'16.0.11929.20984','channel': 'Deferred'},
{'fixed_version':'16.0.13328.20478','channel': 'Enterprise Deferred','channel_version': '2010'},
{'fixed_version':'16.0.13231.20620','channel': 'Enterprise Deferred'},
{'fixed_version':'16.0.13127.20910','channel': 'First Release for Deferred'},
{'fixed_version':'16.0.13426.20332','channel': '2016 Retail'},
{'fixed_version':'16.0.13426.20332','channel': 'Current'},
{'fixed_version':'16.0.13426.20332','channel': '2019 Retail'},
{'fixed_version':'16.0.10369.20032','channel': '2019 Volume'}
];
vcf::microsoft::office_product::check_version_and_report(
constraints:constraints,
severity:SECURITY_HOLE,
bulletin:bulletin,
subproduct:'Excel'
);
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17123
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17125
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17126
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17127
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17128
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17129
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17130
www.nessus.org/u?fd4508ff