KB4015550: Windows 8.1 and Windows Server 2012 R2 April 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 KB4015550. It is,
therefore, affected by multiple vulnerabilities :

- An information disclosure vulnerability exists in the
open-source libjpeg image processing library due to
improper handling of objects in memory. An
unauthenticated, remote attacker can exploit this to
disclose sensitive information that can be utilized to
bypass ASLR security protections. (CVE-2013-6629)

- Multiple information disclosure vulnerabilities exist in
the win32k component due to improper handling of kernel
information. A local attacker can exploit these
vulnerabilities, via a specially crafted application, to
disclose sensitive information. (CVE-2017-0058,
CVE-2017-0188)

- A privilege escalation vulnerability exists in the
Microsoft Graphics Component due to improper handling of
objects in memory. A local attacker can exploit this,
via a specially crafted application, to execute
arbitrary code with elevated privileges. (CVE-2017-0156)

- A flaw exists in the VBScript engine due to improper
handling of objects in memory. An unauthenticated,
remote attacker can exploit this, by convincing a user
to visit a malicious website or open a specially crafted
document file, to execute arbitrary code.
(CVE-2017-0158)

- A security feature bypass vulnerability exists in ADFS
due to incorrectly treating requests from Extranet
clients as Intranet requests. An unauthenticated, remote
attacker can exploit this to bypass account lockout
protection mechanisms and more easily gain access to a
user's account via a brute-force attack. (CVE-2017-0159)

- Multiple flaws exist in Windows Hyper-V Network Switch
due to improper validation of input from the guest
operating system. A local attacker can exploit these,
via a specially crafted application on the guest, to
execute arbitrary code on the host system.
(CVE-2017-0162, CVE-2017-0163, CVE-2017-0180)

- A privilege escalation vulnerability exists due to
improper sanitization of handles stored in memory. A
local attacker can exploit this to gain elevated
privileges. (CVE-2017-0165)

- A flaw exists in LDAP due to buffer request lengths not
being properly calculated. An unauthenticated, remote
attacker can exploit this, via specially crafted traffic
sent to a Domain Controller, to run processes with
elevated privileges. (CVE-2017-0166)

- A flaw exists in the Windows kernel due to improper
handling of objects in memory. A local attacker can
exploit this, via a specially crafted application, to
disclose sensitive information. (CVE-2017-0167)

- Multiple information disclosure vulnerabilities exist in
Windows Hyper-V Network Switch due to improper
validation of user-supplied input. A guest attacker can
exploit these to disclose sensitive information on the
host server. (CVE-2017-0168, CVE-2017-0169)

- Multiple denial of service vulnerabilities exist in
Hyper-V due to improper validation of input from a
privileged user on a guest operating system. A local
attacker on the guest can exploit these, via a specially
crafted application, to cause the host system to crash.
(CVE-2017-0178, CVE-2017-0179, CVE-2017-0184)

- Multiple denial of service vulnerabilities exist in
Windows Hyper-V Network Switch due to improper
validation of input from the guest operating system. A
local attacker on the guest can exploit these
vulnerabilities, via a specially crafted application, to
crash the host system. (CVE-2017-0182, CVE-2017-0183,
CVE-2017-0185, CVE-2017-0186)

- A flaw exists in Windows due to improper handling of
objects in memory that allows an attacker to cause a
denial of service condition. (CVE-2017-0191)

- An information disclosure vulnerability exists in the
Adobe Type Manager Font Driver (ATMFD.dll) due to
improper handling of objects in memory. An
unauthenticated, remote attacker can exploit this, by
convincing a user to open a specially crafted document
or visit a malicious web page, to disclose sensitive
information. (CVE-2017-0192)

- A memory corruption issue exists in Internet Explorer
due to improper validation of user-supplied input. An
unauthenticated, remote attacker can exploit this, by
convincing a user to visit a malicious website, to
execute arbitrary code. (CVE-2017-0202)

- A privilege escalation vulnerability exists in Internet
Explorer due to a failure to properly enforce
cross-domain policies. An unauthenticated, remote
attacker can exploit this to inject arbitrary content
and gain elevated privileges. (CVE-2017-0210)

- A privilege escalation vulnerability exists in Microsoft
Windows OLE due to an unspecified failure in
integrity-level checks. An authenticated, remote
attacker can exploit this to run an application with
limited privileges at a medium integrity level. Note
that this vulnerability by itself does not allow
arbitrary code execution but can be used in conjunction
other vulnerabilities. (CVE-2017-0211)

See also :

http://www.nessus.org/u?d871fd1d

Solution :

Apply security update KB4015550.

Risk factor :

High / CVSS Base Score : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 6.9
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false