| description | The remote Windows host is missing security update 4556843 or cumulative update 4556836. It is, therefore, affected by multiple vulnerabilities : - A denial of service vulnerability exists when .NET Core or .NET Framework improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET Core or .NET Framework web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the .NET Core or .NET Framework application. The update addresses the vulnerability by correcting how the .NET Core or .NET Framework web application handles web requests. (CVE-2020-1108) - An information disclosure vulnerability exists in the way that the Windows Graphics Device Interface (GDI) handles objects in memory, allowing an attacker to retrieve information from a targeted system. By itself, the information disclosure does not allow arbitrary code execution; however, it could allow arbitrary code to be run if the attacker uses it in combination with another vulnerability. (CVE-2020-1141) - A denial of service vulnerability exists when Hyper-V on a Windows Server fails to properly handle specially crafted network packets. (CVE-2020-0909) - An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2020-1072) - An information disclosure vulnerability exists when the Windows Client Server Run-Time Subsystem (CSRSS) fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2020-1116) - An elevation of privilege vulnerability exists when the Windows Print Spooler service improperly allows arbitrary writing to the file system. An attacker who successfully exploited this vulnerability could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2020-1048, CVE-2020-1070) - A remote code execution vulnerability exists when the Windows Jet Database Engine improperly handles objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code on a victim system. An attacker could exploit this vulnerability by enticing a victim to open a specially crafted file. The update addresses the vulnerability by correcting the way the Windows Jet Database Engine handles objects in memory. (CVE-2020-1051, CVE-2020-1174, CVE-2020-1175, CVE-2020-1176) - An elevation of privilege vulnerability exists in Windows Block Level Backup Engine Service (wbengine) that allows file deletion in arbitrary locations. (CVE-2020-1010) - An elevation of privilege vulnerability exists in .NET Framework which could allow an attacker to elevate their privilege level. (CVE-2020-1066) - An information disclosure vulnerability exists when the Windows GDI component improperly discloses the contents of its memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit an untrusted webpage. The security update addresses the vulnerability by correcting how the Windows GDI component handles objects in memory. (CVE-2020-0963, CVE-2020-1179) - A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory. 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-2020-1062, CVE-2020-1092) - An elevation of privilege vulnerability exists in Windows Installer because of the way Windows Installer handles certain filesystem operations. (CVE-2020-1078) - A remote code execution vulnerability exists in the way that the MSHTML engine improperly validates input. An attacker could execute arbitrary code in the context of the current user. (CVE-2020-1064) - A remote code execution vulnerability exists in the way that Microsoft Graphics Components handle objects in memory. An attacker who successfully exploited the vulnerability could execute arbitrary code on a target system. (CVE-2020-1153) - An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2020-1054, CVE-2020-1143) - A memory corruption vulnerability exists when Windows Media Foundation improperly handles objects in memory. An attacker who successfully exploited the vulnerability could install programs; view, change, or delete data; or create new accounts with full user rights. There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit a malicious webpage. The security update addresses the vulnerability by correcting how Windows Media Foundation handles objects in memory. (CVE-2020-1150) - A remote code execution vulnerability exists in the way that Windows handles objects in memory. An attacker who successfully exploited the vulnerability could execute arbitrary code with elevated permissions on a target system. (CVE-2020-1067) - A security feature bypass vulnerability exists in Microsoft Windows when the Task Scheduler service fails to properly verify client connections over RPC. An attacker who successfully exploited this vulnerability could run arbitrary code as an administrator. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2020-1113) - An elevation of privilege vulnerability exists when the Windows Background Intelligent Transfer Service (BITS) IIS module improperly handles uploaded content. An attacker who successfully exploited this vulnerability could upload restricted file types to an IIS-hosted folder. (CVE-2020-1112) - An elevation of privilege vulnerability exists when the Windows Printer Service improperly validates file paths while loading printer drivers. An authenticated attacker who successfully exploited this vulnerability could run arbitrary code with elevated system privileges. (CVE-2020-1081) - A remote code execution vulnerability exists in the way that the Microsoft Script Runtime handles objects in memory. 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-2020-1061) - An elevation of privilege vulnerability exists when Windows improperly handles errors tied to Remote Access Common Dialog. An attacker who successfully exploited the vulnerability could run arbitrary code with elevated privileges. (CVE-2020-1071) - An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2020-1114) - An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. (CVE-2020-1154) - A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory. 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-2020-1035, CVE-2020-1058, CVE-2020-1060, CVE-2020-1093) |
| code | #
# (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(136507);
script_version("1.8");
script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/20");
script_cve_id(
"CVE-2020-0909",
"CVE-2020-0963",
"CVE-2020-1010",
"CVE-2020-1035",
"CVE-2020-1048",
"CVE-2020-1051",
"CVE-2020-1054",
"CVE-2020-1058",
"CVE-2020-1060",
"CVE-2020-1061",
"CVE-2020-1062",
"CVE-2020-1064",
"CVE-2020-1066",
"CVE-2020-1067",
"CVE-2020-1070",
"CVE-2020-1071",
"CVE-2020-1072",
"CVE-2020-1078",
"CVE-2020-1081",
"CVE-2020-1092",
"CVE-2020-1093",
"CVE-2020-1108",
"CVE-2020-1112",
"CVE-2020-1113",
"CVE-2020-1114",
"CVE-2020-1116",
"CVE-2020-1141",
"CVE-2020-1143",
"CVE-2020-1150",
"CVE-2020-1153",
"CVE-2020-1154",
"CVE-2020-1174",
"CVE-2020-1175",
"CVE-2020-1176",
"CVE-2020-1179"
);
script_xref(name:"MSKB", value:"4556836");
script_xref(name:"MSKB", value:"4556843");
script_xref(name:"MSFT", value:"MS20-4556836");
script_xref(name:"MSFT", value:"MS20-4556843");
script_xref(name:"IAVA", value:"2020-A-0213-S");
script_name(english:"KB4556843: Windows 7 and Windows Server 2008 R2 May 2020 Security Update");
script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The remote Windows host is missing security update 4556843
or cumulative update 4556836. It is, therefore, affected by
multiple vulnerabilities :
- A denial of service vulnerability exists when .NET Core
or .NET Framework improperly handles web requests. An
attacker who successfully exploited this vulnerability
could cause a denial of service against a .NET Core or
.NET Framework web application. The vulnerability can be
exploited remotely, without authentication. A remote
unauthenticated attacker could exploit this
vulnerability by issuing specially crafted requests to
the .NET Core or .NET Framework application. The update
addresses the vulnerability by correcting how the .NET
Core or .NET Framework web application handles web
requests. (CVE-2020-1108)
- An information disclosure vulnerability exists in the
way that the Windows Graphics Device Interface (GDI)
handles objects in memory, allowing an attacker to
retrieve information from a targeted system. By itself,
the information disclosure does not allow arbitrary code
execution; however, it could allow arbitrary code to be
run if the attacker uses it in combination with another
vulnerability. (CVE-2020-1141)
- A denial of service vulnerability exists when Hyper-V on
a Windows Server fails to properly handle specially
crafted network packets. (CVE-2020-0909)
- An information disclosure vulnerability exists when the
Windows kernel improperly handles objects in memory. An
attacker who successfully exploited this vulnerability
could obtain information to further compromise the users
system. (CVE-2020-1072)
- An information disclosure vulnerability exists when the
Windows Client Server Run-Time Subsystem (CSRSS) fails
to properly handle objects in memory. An attacker who
successfully exploited the vulnerability could obtain
information to further compromise the users system.
(CVE-2020-1116)
- An elevation of privilege vulnerability exists when the
Windows Print Spooler service improperly allows
arbitrary writing to the file system. An attacker who
successfully exploited this vulnerability could run
arbitrary code with elevated system privileges. An
attacker could then install programs; view, change, or
delete data; or create new accounts with full user
rights. (CVE-2020-1048, CVE-2020-1070)
- A remote code execution vulnerability exists when the
Windows Jet Database Engine improperly handles objects
in memory. An attacker who successfully exploited this
vulnerability could execute arbitrary code on a victim
system. An attacker could exploit this vulnerability by
enticing a victim to open a specially crafted file. The
update addresses the vulnerability by correcting the way
the Windows Jet Database Engine handles objects in
memory. (CVE-2020-1051, CVE-2020-1174, CVE-2020-1175,
CVE-2020-1176)
- An elevation of privilege vulnerability exists in
Windows Block Level Backup Engine Service (wbengine)
that allows file deletion in arbitrary locations.
(CVE-2020-1010)
- An elevation of privilege vulnerability exists in .NET
Framework which could allow an attacker to elevate their
privilege level. (CVE-2020-1066)
- An information disclosure vulnerability exists when the
Windows GDI component improperly discloses the contents
of its memory. An attacker who successfully exploited
the vulnerability could obtain information to further
compromise the users system. There are multiple ways an
attacker could exploit the vulnerability, such as by
convincing a user to open a specially crafted document,
or by convincing a user to visit an untrusted webpage.
The security update addresses the vulnerability by
correcting how the Windows GDI component handles objects
in memory. (CVE-2020-0963, CVE-2020-1179)
- A remote code execution vulnerability exists when
Internet Explorer improperly accesses objects in memory.
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-2020-1062,
CVE-2020-1092)
- An elevation of privilege vulnerability exists in
Windows Installer because of the way Windows Installer
handles certain filesystem operations. (CVE-2020-1078)
- A remote code execution vulnerability exists in the way
that the MSHTML engine improperly validates input. An
attacker could execute arbitrary code in the context of
the current user. (CVE-2020-1064)
- A remote code execution vulnerability exists in the way
that Microsoft Graphics Components handle objects in
memory. An attacker who successfully exploited the
vulnerability could execute arbitrary code on a target
system. (CVE-2020-1153)
- An elevation of privilege vulnerability exists in
Windows when the Windows kernel-mode driver fails to
properly handle objects in memory. An attacker who
successfully exploited this vulnerability could run
arbitrary code in kernel mode. An attacker could then
install programs; view, change, or delete data; or
create new accounts with full user rights.
(CVE-2020-1054, CVE-2020-1143)
- A memory corruption vulnerability exists when Windows
Media Foundation improperly handles objects in memory.
An attacker who successfully exploited the vulnerability
could install programs; view, change, or delete data; or
create new accounts with full user rights. There are
multiple ways an attacker could exploit the
vulnerability, such as by convincing a user to open a
specially crafted document, or by convincing a user to
visit a malicious webpage. The security update addresses
the vulnerability by correcting how Windows Media
Foundation handles objects in memory. (CVE-2020-1150)
- A remote code execution vulnerability exists in the way
that Windows handles objects in memory. An attacker who
successfully exploited the vulnerability could execute
arbitrary code with elevated permissions on a target
system. (CVE-2020-1067)
- A security feature bypass vulnerability exists in
Microsoft Windows when the Task Scheduler service fails
to properly verify client connections over RPC. An
attacker who successfully exploited this vulnerability
could run arbitrary code as an administrator. An
attacker could then install programs; view, change, or
delete data; or create new accounts with full user
rights. (CVE-2020-1113)
- An elevation of privilege vulnerability exists when the
Windows Background Intelligent Transfer Service (BITS)
IIS module improperly handles uploaded content. An
attacker who successfully exploited this vulnerability
could upload restricted file types to an IIS-hosted
folder. (CVE-2020-1112)
- An elevation of privilege vulnerability exists when the
Windows Printer Service improperly validates file paths
while loading printer drivers. An authenticated attacker
who successfully exploited this vulnerability could run
arbitrary code with elevated system privileges.
(CVE-2020-1081)
- A remote code execution vulnerability exists in the way
that the Microsoft Script Runtime handles objects in
memory. 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-2020-1061)
- An elevation of privilege vulnerability exists when
Windows improperly handles errors tied to Remote Access
Common Dialog. An attacker who successfully exploited
the vulnerability could run arbitrary code with elevated
privileges. (CVE-2020-1071)
- An elevation of privilege vulnerability exists when the
Windows kernel fails to properly handle objects in
memory. An attacker who successfully exploited this
vulnerability could run arbitrary code in kernel mode.
An attacker could then install programs; view, change,
or delete data; or create new accounts with full user
rights. (CVE-2020-1114)
- An elevation of privilege vulnerability exists when the
Windows Common Log File System (CLFS) driver improperly
handles objects in memory. An attacker who successfully
exploited this vulnerability could run processes in an
elevated context. (CVE-2020-1154)
- A remote code execution vulnerability exists in the way
that the VBScript engine handles objects in memory. 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-2020-1035, CVE-2020-1058,
CVE-2020-1060, CVE-2020-1093)");
# https://support.microsoft.com/en-us/help/4556836/windows-7-update-kb4556836
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?20528be0");
# https://support.microsoft.com/en-us/help/4556843/windows-7-update-kb4556843
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2dcc204d");
script_set_attribute(attribute:"solution", value:
"Apply Security Only update KB4556843 or Cumulative Update KB4556836.
Please Note: These updates are only available through Microsoft's Extended Support Updates program.
This operating system is otherwise unsupported.");
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:POC/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:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1176");
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:"2020/05/12");
script_set_attribute(attribute:"patch_publication_date", value:"2020/05/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/12");
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 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_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 = 'MS20-05';
kbs = make_list(
'4556836',
'4556843'
);
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');
get_kb_item_or_exit('SMB/WindowsVersion', exit_code:1);
if (hotfix_check_sp_range(win7:'1') <= 0) audit(AUDIT_OS_SP_NOT_VULN);
share = hotfix_get_systemdrive(as_share:TRUE, exit_on_fail:TRUE);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);
if (
smb_check_rollup(os:'6.1',
sp:1,
rollup_date:'05_2020',
bulletin:bulletin,
rollup_kb_list:[4556836, 4556843])
)
{
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, hotfix_get_audit_report());
}
|