KB4038799: Windows Server 2012 September 2017 Cumulative Update

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Windows host is affected by multiple vulnerabilities.

Description :

The remote Windows host is missing security update 4038786
or 4038799. It is, therefore, affected by multiple
vulnerabilities :

- A race condition that could lead to a remote code
execution vulnerability exists in NetBT Session Services
when NetBT fails to maintain certain sequencing
requirements. (CVE-2017-0161)

- 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-2017-8675)

- 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-2017-8676)

- A remote code execution vulnerability exists when the
Windows font library improperly handles specially
crafted embedded fonts. An attacker who successfully
exploited this vulnerability could take control of the
affected system. An attacker could then install
programs; view, change, or delete data; or create new
accounts with full user rights. (CVE-2017-8682)

- An information disclosure vulnerability exists when the
Microsoft Windows Graphics Component improperly handles
objects in memory. An attacker who successfully
exploited the vulnerability could obtain information to
further compromise the users system. (CVE-2017-8683)

- A information disclosure vulnerability exists when the
Windows GDI+ component improperly discloses kernel
memory addresses. An attacker who successfully exploited
the vulnerability could obtain information to further
compromise the users system.
(CVE-2017-8677, CVE-2017-8680, CVE-2017-8681,
CVE-2017-8684)

- A memory corruption vulnerability exists in the Windows
Server DHCP service when an attacker sends specially
crafted packets to a DHCP failover server. An attacker
who successfully exploited the vulnerability could
either run arbitrary code on the DHCP failover server or
cause the DHCP service to become nonresponsive. To
exploit the vulnerability, an attacker could send a
specially crafted packet to a DHCP server. However, the
DHCP server must be set to failover mode for the attack
to succeed. The security update addresses the
vulnerability by correcting how DHCP failover servers
handle network packets. (CVE-2017-8686)

- An Information disclosure vulnerability exists in
Windows kernel that could allow an attacker to retrieve
information that could lead to a Kernel Address Space
Layout Randomization (KASLR) bypass. An attacker who
successfully exploited this vulnerability could retrieve
the memory address of a kernel object. (CVE-2017-8687)

- 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-2017-8688)

- A remote code execution vulnerability exists due to the
way Windows Uniscribe handles objects in memory. An
attacker who successfully exploited this vulnerability
could take control of the affected system. An attacker
could then install programs; view, change, or delete
data; or create new accounts with full user rights.
(CVE-2017-8692)

- An information disclosure vulnerability exists when
Windows Uniscribe 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 update addresses the vulnerability by correcting how
Windows Uniscribe handles objects in memory.
(CVE-2017-8695)

- A remote code execution vulnerability exists when
Windows Shell does not properly validate file copy
destinations. An attacker who successfully exploited the
vulnerability could run arbitrary code in the context of
the current user.
(CVE-2017-8699)

- An information disclosure vulnerability exists when the
Windows kernel fails to properly initialize a memory
address, allowing an attacker to retrieve information
that could lead to a Kernel Address Space Layout
Randomization (KASLR) bypass. An attacker who
successfully exploited this vulnerability could retrieve
the base address of the kernel driver from a compromised
process. (CVE-2017-8708)

- An information disclosure vulnerability exists when
Windows Hyper-V on a host operating system fails to
properly validate input from an authenticated user on a
guest operating system. (CVE-2017-8713)

- A remote code execution vulnerability exists in the VM
Host Agent Service of Remote Desktop Virtual Host role
when it fails to properly validate input from an
authenticated user on a guest operating system. To
exploit the vulnerability, an attacker could issue a
specially crafted certificate on the guest operating
system that could cause the VM host agent service on the
host operating system to execute arbitrary code. The
Remote Desktop Virtual Host role is not enabled by
default. An attacker who successfully exploited the
vulnerability could execute arbitrary code on the host
operating system. The security update addresses the
vulnerability by correcting how VM host agent service
validates guest operating system user input.
(CVE-2017-8714)

- 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-2017-8678, CVE-2017-8679, CVE-2017-8709,
CVE-2017-8719)

- An elevation of privilege vulnerability exists in
Windows when the Win32k component 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-2017-8720)

- A spoofing vulnerability exists when Internet Explorer
improperly handles specific HTML content. An attacker
who successfully exploited this vulnerability could
trick a user into believing that the user was visiting a
legitimate website. The specially crafted website could
either spoof content or serve as a pivot to chain an
attack with other vulnerabilities in web services. To
exploit the vulnerability, the user must either browse
to a malicious website or be redirected to it. In an
email attack scenario, an attacker could send an email
message in an attempt to convince the user to click a
link to the malicious website. (CVE-2017-8733)

- A remote code execution vulnerability exists when
Microsoft Windows PDF Library improperly handles objects
in memory. The vulnerability could corrupt memory in a
way that enables 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-2017-8728, CVE-2017-8737)

- A remote code execution vulnerability exists in the way
that Microsoft browser JavaScript engines render content
when handling 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. (CVE-2017-8741)

- 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. (CVE-2017-8747)

- 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. (CVE-2017-8747,
CVE-2017-8749)

- A remote code execution vulnerability exists when
Microsoft .NET Framework processes untrusted input. An
attacker who successfully exploited this vulnerability
in software using the .NET framework could take control
of an affected system. An attacker could then install
programs; view, change, or delete data; or create new
accounts with full user rights. (CVE-2017-8759)

See also :

http://www.nessus.org/u?91b2bd74
http://www.nessus.org/u?35364720

Solution :

Apply security update KB4038786 or KB4038799.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
Public Exploit Available : true