6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
0.031 Low
EPSS
Percentile
91.0%
The Internet Explorer installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :
An elevation of privilege vulnerability exists in the way that the Wininit.dll handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions. There are multiple ways an attacker could exploit the vulnerability: (CVE-2020-1012)
A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory. The vulnerability could corrupt memory in a way that could allow an attacker to 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-2020-0878)
#
# (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(140428);
script_version("1.9");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/04/25");
script_cve_id("CVE-2020-0878", "CVE-2020-1012");
script_xref(name:"MSKB", value:"4577010");
script_xref(name:"MSKB", value:"4577051");
script_xref(name:"MSKB", value:"4577064");
script_xref(name:"MSKB", value:"4577066");
script_xref(name:"MSFT", value:"MS20-4577010");
script_xref(name:"MSFT", value:"MS20-4577051");
script_xref(name:"MSFT", value:"MS20-4577064");
script_xref(name:"MSFT", value:"MS20-4577066");
script_xref(name:"IAVA", value:"2020-A-0408-S");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/03");
script_xref(name:"CEA-ID", value:"CEA-2020-0118");
script_name(english:"Security Updates for Internet Explorer (September 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 elevation of privilege vulnerability exists in the
way that the Wininit.dll handles objects in memory. An
attacker who successfully exploited the vulnerability
could execute code with elevated permissions. There are
multiple ways an attacker could exploit the
vulnerability: (CVE-2020-1012)
- A remote code execution vulnerability exists in the way
that Microsoft browsers access objects in memory. The
vulnerability could corrupt memory in a way that could
allow an attacker to 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-2020-0878)");
# https://support.microsoft.com/en-us/help/4577010/cumulative-security-update-for-internet-explorer
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?573fa982");
script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/4577051/windows-7-update");
# https://support.microsoft.com/en-us/help/4577064/windows-server-2008-update
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7633d626");
script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/4577066/windows-8-1-update");
script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:
-KB4577010
-KB4577051
-KB4577064
-KB4577066");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:F/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:F/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1012");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/09/08");
script_set_attribute(attribute:"patch_publication_date", value:"2020/09/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/09/08");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
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) 2020-2023 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("smb_hotfixes_fcheck.inc");
include("smb_hotfixes.inc");
include("smb_func.inc");
get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");
bulletin = 'MS20-09';
kbs = make_list(
'4577010',
'4577038',
'4577064',
'4577066',
'4577051'
);
if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_WARNING);
get_kb_item_or_exit("SMB/Registry/Enumerated");
os = get_kb_item_or_exit("SMB/WindowsVersion", exit_code:1);
if (hotfix_check_sp_range(vista:'2', win7:'1', 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:"11.0.9600.19810", min_version:"11.0.9600.16000", dir:"\system32", bulletin:bulletin, kb:"4577010") ||
# Windows Server 2012
# Internet Explorer 11
hotfix_is_vulnerable(os:"6.2", sp:0, file:"mshtml.dll", version:"11.0.9600.19810", min_version:"11.0.9600.16000", dir:"\system32", bulletin:bulletin, kb:"4577010") ||
# Windows 7 / Server 2008 R2
# Internet Explorer 11
hotfix_is_vulnerable(os:"6.1", sp:1, file:"mshtml.dll", version:"11.0.9600.19810", min_version:"11.0.9600.16000", dir:"\system32", bulletin:bulletin, kb:"4577010") ||
# Windows Server 2008
# Internet Explorer 9
hotfix_is_vulnerable(os:"6.0", sp:2, file:"mshtml.dll", version:"9.0.8112.21488", min_version:"9.0.8112.16000", dir:"\system32", bulletin:bulletin, kb:"4577010")
)
{
report = '\nNote: The fix for this issue is available in either of the following updates:\n';
report += ' - KB4577010 : Cumulative Security Update for Internet Explorer\n';
if(os == "6.3")
{
report += ' - KB4577066 : Windows 8.1 / Server 2012 R2 Monthly Rollup\n';
hotfix_add_report(bulletin:'MS20-09', kb:'4577066', report);
}
else if(os == "6.2")
{
report += ' - KB4577038 : Windows Server 2012 Monthly Rollup\n';
hotfix_add_report(bulletin:'MS20-09', kb:'4577038', report);
}
else if(os == "6.1")
{
report += ' - KB4577051 : Windows 7 / Server 2008 R2 Monthly Rollup\n';
hotfix_add_report(bulletin:'MS20-09', kb:'4577051', report);
}
else if(os == "6.0")
{
report += ' - KB4577064 : Windows Server 2008 Monthly Rollup\n';
hotfix_add_report(bulletin:'MS20-09', kb:'4577064', report);
}
set_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
hotfix_security_warning();
hotfix_check_fversion_end();
}
else
{
hotfix_check_fversion_end();
audit(AUDIT_HOST_NOT, hotfix_get_audit_report());
}
6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
0.031 Low
EPSS
Percentile
91.0%