CVSS2
Attack Vector
NETWORK
Attack Complexity
HIGH
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:H/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
99.9%
The Internet Explorer installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :
An information disclosure vulnerability exists in the way that affected Microsoft browsers handle cross-origin requests. An attacker who successfully exploited this vulnerability could determine the origin of all of the web pages in the affected browser. (CVE-2020-0706)
A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user.
(CVE-2020-0673, CVE-2020-0674)
#
# (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(133619);
script_version("1.7");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/12/06");
script_cve_id("CVE-2020-0673", "CVE-2020-0674", "CVE-2020-0706");
script_xref(name:"MSKB", value:"4537767");
script_xref(name:"MSKB", value:"4537814");
script_xref(name:"MSKB", value:"4537821");
script_xref(name:"MSFT", value:"MS20-4537767");
script_xref(name:"MSFT", value:"MS20-4537814");
script_xref(name:"MSFT", value:"MS20-4537821");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/03");
script_xref(name:"CEA-ID", value:"CEA-2020-0019");
script_xref(name:"CEA-ID", value:"CEA-2020-0010");
script_name(english:"Security Updates for Internet Explorer (February 2020)");
script_set_attribute(attribute:"synopsis", value:
"The Internet Explorer installation on the remote host is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The Internet Explorer installation on the remote host is
missing security updates. It is, therefore, affected by
multiple vulnerabilities :
- An information disclosure vulnerability exists in the
way that affected Microsoft browsers handle cross-origin
requests. An attacker who successfully exploited this
vulnerability could determine the origin of all of the
web pages in the affected browser. (CVE-2020-0706)
- A remote code execution vulnerability exists in the way
that the scripting engine handles objects in memory in
Internet Explorer. The vulnerability could corrupt
memory in such a way that an attacker could execute
arbitrary code in the context of the current user. An
attacker who successfully exploited the vulnerability
could gain the same user rights as the current user.
(CVE-2020-0673, CVE-2020-0674)");
# https://support.microsoft.com/en-us/help/4537767/cumulative-security-update-for-internet-explorer
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?46d4db3a");
# https://support.microsoft.com/en-us/help/4537814/windows-server-2012-update-kb4537814
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?31092e92");
script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/4537821/windows-8-1-kb4537821");
script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:
-KB4537767
-KB4537814
-KB4537821");
script_set_cvss_base_vector("CVSS2#AV:N/AC:H/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-2020-0674");
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:"2020/02/11");
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:/o:microsoft:windows");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows : Microsoft Bulletins");
script_copyright(english:"This script is Copyright (C) 2020-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("smb_check_rollup.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_hotfixes_fcheck.inc");
include("smb_hotfixes.inc");
include("smb_func.inc");
include("misc_func.inc");
get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");
bulletin = 'MS20-02';
kbs = make_list(
'4537767',
'4537814',
'4537821'
);
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");
os = get_kb_item_or_exit("SMB/WindowsVersion", exit_code:1);
if (hotfix_check_sp_range(win8:'0', win81:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);
productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);
if ("Windows 8" >< productname && "8.1" >!< productname)
audit(AUDIT_OS_SP_NOT_VULN);
if ("Vista" >< productname) audit(AUDIT_OS_SP_NOT_VULN);
if (hotfix_check_server_core() == 1) audit(AUDIT_WIN_SERVER_CORE);
share = hotfix_get_systemdrive(as_share:TRUE, exit_on_fail:TRUE);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);
if (
# Windows 8.1 / Windows Server 2012 R2
# Internet Explorer 11
hotfix_is_vulnerable(os:"6.3", sp:0, file:"mshtml.dll", version:"11.0.9600.19625", min_version:"11.0.9600.16000", dir:"\system32", bulletin:bulletin, kb:"4537767") ||
# Windows Server 2012
# Internet Explorer 10
hotfix_is_vulnerable(os:"6.2", sp:0, file:"mshtml.dll", version:"10.0.9200.22975", min_version:"10.0.9200.16000", dir:"\system32", bulletin:bulletin, kb:"4537767") ||
# Internet Explorer 11
hotfix_is_vulnerable(os:"6.2", sp:0, file:"mshtml.dll", version:"11.0.9600.19625", min_version:"11.0.9600.16000", dir:"\system32", bulletin:bulletin, kb:"4537767")
)
{
report = '\nNote: The fix for this issue is available in either of the following updates:\n';
report += ' - KB4537767 : Cumulative Security Update for Internet Explorer\n';
if(os == "6.3")
{
report += ' - KB4537821 : Windows 8.1 / Server 2012 R2 Monthly Rollup\n';
hotfix_add_report(bulletin:'MS20-02', kb:'4537821', report);
}
else if(os == "6.2")
{
report += ' - KB4537814 : Windows Server 2012 Monthly Rollup\n';
hotfix_add_report(bulletin:'MS20-02', kb:'4537814', report);
}
set_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
hotfix_security_hole();
hotfix_check_fversion_end();
}
else
{
hotfix_check_fversion_end();
audit(AUDIT_HOST_NOT, hotfix_get_audit_report());
}
CVSS2
Attack Vector
NETWORK
Attack Complexity
HIGH
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:H/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
99.9%