Windows 2008 August 2017 Multiple Security Updates

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 multiple security updates released
on 2017/08/08. It is, therefore, affected by multiple
vulnerabilities :

- A denial of service vulnerability exists when Microsoft Windows
improperly handles NetBIOS packets. An attacker who successfully
exploited this vulnerability could cause a target computer to
become completely unresponsive. A remote unauthenticated attacker
could exploit this vulnerability by sending a series of TCP
packets to a target system, resulting in a permanent denial of
service condition. The update addresses the vulnerability by
correcting how the Windows network stack handles NetBIOS traffic.
(CVE-2017-0174)

- A buffer overflow vulnerability exists in the Microsoft JET
Database Engine that could allow remote code execution on an
affected system. An attacker who successfully exploited this
vulnerability could take complete control of an affected system.
An attacker could then install programs; view, change, or delete
data; or create new accounts with full user rights. Users whose
accounts are configured to have fewer user rights on the system
could be less impacted than users who operate with administrative
user rights. Exploitation of this vulnerability requires that a
user open or preview a specially crafted database file while using
an affected version of Microsoft Windows. In an email attack
scenario, an attacker could exploit the vulnerability by sending a
specially crafted database file to the user and then convincing
the user to open the file. The update addresses the vulnerability
by modifying how the Microsoft JET Database Engine handles objects
in memory. (CVE-2017-0250)

- 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. (CVE-2017-0299)

- 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. To exploit this vulnerability, an attacker
would first have to log on to the system. An attacker could then
run a specially crafted application that could exploit the
vulnerability and take control of an affected system. The update
addresses this vulnerability by correcting how Win32k handles
objects in memory. (CVE-2017-8593)

- A remote code execution vulnerability exists when Windows Search
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. To exploit the
vulnerability, the attacker could send specially crafted messages
to the Windows Search service. An attacker with access to a target
computer could exploit this vulnerability to elevate privileges
and take control of the computer. Additionally, in an enterprise
scenario, a remote unauthenticated attacker could remotely trigger
the vulnerability through an SMB connection and then take control
of a target computer. The security update addresses the
vulnerability by correcting how Windows Search handles objects in
memory. (CVE-2017-8620)

- An elevation of privilege vulnerability exists when the Windows
Common Log File System (CLFS) driver improperly handles objects in
memory. In a local attack scenario, an attacker could exploit this
vulnerability by running a specially crafted application to take
control of the affected system. An attacker who successfully
exploited this vulnerability could run processes in an elevated
context. The update addresses the vulnerability by correcting how
CLFS handles objects in memory. Note: The Common Log File System
(CLFS) is a high-performance, general-purpose log file subsystem
that dedicated client applications can use and multiple clients
can share to optimize log access. (CVE-2017-8624)

- This security update resolves a vulnerability in Windows Error
Reporting (WER). The vulnerability could allow elevation of
privilege if successfully exploited by an attacker. An attacker
who successfully exploited this vulnerability could gain greater
access to sensitive information and system functionality. This
update corrects the way the WER handles and executes files.
(CVE-2017-8633)

- 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-2017-8636)

- A remote code execution vulnerability exists in the way
JavaScript engines render when handling objects in memory
in Microsoft browsers. 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. If the current user is logged on with
administrative user rights, an attacker who successfully exploited
the vulnerability 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-2017-8641)

- 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-2017-8651)

- A remote code execution vulnerability exists when Microsoft
browsers improperly access objects in memory. The vulnerability
could corrupt memory in such a way that enables an attacker to
execute arbitrary code in the context of the current user.
(CVE-2017-8653)

- An information disclosure vulnerability exists when the Volume
Manager Extension Drivercomponent improperly provides kernel
information. An attacker who successfully exploited the
vulnerability could obtain information to further compromise the
users system. To exploit this vulnerability, an attacker would
have to log on to an affected system and run a specially crafted
application. The security update addresses the vulnerability by
correcting how Volume Manager Extension Driver handles objects in
memory. (CVE-2017-8668)

- A remote code execution vulnerability exists when the Windows font
library improperly handles specially crafted embedded fonts. An
attacker who successfully exploited this vulnerability
would gain code execution on the target system. Users whose
accounts are configured to have fewer user rights on the system
could be less impacted than users who operate with administrative
user rights. There are multiple ways an attacker could exploit the
vulnerability: In a web-based attack scenario, an attacker could
host a specially crafted website that is designed to exploit the
vulnerability and then convince users to view the website. An
attacker would have no way to force users to view the
attacker-controlled content. Instead, an attacker would have to
convince users to take action, typically by getting them to click
a link in an email or Instant Messenger message that takes users
to the attacker's website, or by opening an attachment sent
through email. In a file sharing attack scenario, an attacker
could provide a specially crafted document file that is designed
to exploit the vulnerability, and then convince users to open the
document file. The security update addresses the vulnerability by
correcting how the Windows font library handles embedded fonts.
(CVE-2017-8691)

See also :

https://support.microsoft.com/en-us/help/4022750/title
https://support.microsoft.com/en-us/help/4034034/title
https://support.microsoft.com/en-us/help/4034744/title
https://support.microsoft.com/en-us/help/4034745/title
https://support.microsoft.com/en-us/help/4034775/title
https://support.microsoft.com/en-us/help/4035055/title
https://support.microsoft.com/en-us/help/4035056/title
https://support.microsoft.com/en-us/help/4035679/title

Solution :

Apply the following security updates :

- KB4022750
- KB4034034
- KB4034733
- KB4034741
- KB4034744
- KB4034745
- KB4034775
- KB4035055
- KB4035056
- KB4035679

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.3
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

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