# MA-595.042016: MyCERT Advisory - Microsoft Releases April 2016 Security Bulletin

**Date:** 14 Apr 2016  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-595.042016  
**Advisory ID:** MA-595.042016

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####
**1.0 Introduction**
Microsoft has released thirteen updates to address vulnerabilities in Microsoft software. Exploitation of some of these vulnerabilities could allow a remote attacker to take control of an affected system.
**2.0The list of the Important vulnerabilities are as below:**
> **2.1 Cumulative Security Update for Internet Explorer (3148531)** 
> This security update resolves vulnerabilities in Internet Explorer. The most severe of the vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. An attacker who successfully exploited this 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 this 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.
>
> **Patch**: <http://go.microsoft.com/fwlink/?LinkId=746891>
>
> **2.2 Cumulative Security Update for Microsoft Edge (**3148532**)**
> This security update resolves vulnerabilities in Microsoft Edge. The most severe of the vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Microsoft Edge. An attacker who successfully exploited the vulnerabilities could gain the same user rights as the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
>
> **Patch**: <http://go.microsoft.com/fwlink/?LinkId=746894>
>
> **2.3 Security Update for Microsoft Graphics Component (3148522)**
> This security update resolves vulnerabilities in Microsoft Windows, Microsoft .NET Framework, Microsoft Office, Skype for Business, and Microsoft Lync. The most severe of the vulnerabilities could allow remote code execution if a user opens a specially crafted document or visits a webpage that contains specially crafted embedded fonts.
>
> **Patch:** <http://go.microsoft.com/fwlink/?LinkId=746883>
>
> **2.4 Security Update for Microsoft XML Core Services (3148541)**
> This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if a user clicks a specially crafted link that could allow an attacker to run malicious code remotely to take control of the user’s system. However, in all cases an attacker would have no way to force a user to click a specially crafted link. An attacker would have to convince a user to click the link, typically by way of an enticement in an email or Instant Messenger message.
>
> **Patch**: <http://go.microsoft.com/fwlink/?LinkId=746897>
>
> **2.5 Security Update for .NET Framework (3148789)**
> This security update resolves a vulnerability in Microsoft .NET Framework. The vulnerability could allow remote code execution if an attacker with access to the local system executes a malicious application.
>
> **Patch:** <http://go.microsoft.com/fwlink/?LinkId=746929>
>
> **2.6 Security Update for Microsoft Office (3148775)**
> This security update resolves vulnerabilities in Microsoft Office. The most severe of the vulnerabilities could allow remote code execution if a user opens a specially crafted Microsoft Office file. An attacker who successfully exploited the vulnerabilities could run arbitrary code in the context of the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
>
> **Patch**: <http://go.microsoft.com/fwlink/?LinkId=746928>
> **2.7 Security Update for Windows OLE (3146706)**
> This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if Windows OLE fails to properly validate user input. An attacker could exploit the vulnerability to execute malicious code. However, an attacker must first convince a user to open either a specially crafted file or a program from either a webpage or an email message.
>
> **Patch**: <http://go.microsoft.com/fwlink/?LinkId=747040>
>
> **2.8 Security Update for Windows Hyper-V (3143118)**
> This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if an authenticated attacker on a guest operating system runs a specially crafted application that causes the Hyper-V host operating system to execute arbitrary code. Customers who have not enabled the Hyper-V role are not affected.
>
> **Patch:** <http://go.microsoft.com/fwlink/?LinkId=733440>
> **2.9 Security Update for Secondary Logon (3148538)**
> This security update resolves a vulnerability in Microsoft Windows. An attacker who successfully exploited this vulnerability could run arbitrary code as an administrator.
>
> **Patch:** <http://go.microsoft.com/fwlink/?LinkId=746896>
> **2.10 Security Update for SAM and LSAD Remote Protocols (3148527)**
> This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker launches a man-in-the-middle (MiTM) attack. An attacker could then force a downgrade of the authentication level of the SAM and LSAD channels and impersonate an authenticated user.
>
> **Patch:** <http://go.microsoft.com/fwlink/?LinkId=746885>
> **2.11 Security Update for CSRSS (3148528)**
> This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow security feature bypass if an attacker logs on to a target system and runs a specially crafted application.
>
> **Patch:** <http://go.microsoft.com/fwlink/?LinkId=746886>
> **2.12 Security Update for HTTP.sys (3148795)**
> This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow denial of service if an attacker sends a specially crafted HTTP packet to a target system.
>
> **Patch:** <http://go.microsoft.com/fwlink/?LinkId=746932>
>
> **2.13 Security Update for Adobe Flash Player (3154132)**
> This security update resolves vulnerabilities in Adobe Flash Player when installed on all supported editions of Windows 8.1, Windows Server 2012, Windows Server 2012 R2, Windows RT 8.1, and Windows 10.
>
> **Patch:** <http://go.microsoft.com/fwlink/?LinkId=785154>
**3.0 Recommendation**
Users are recommended to perform the update immediately. All of the patches could be done almost automatically via the Windows Update application.
The how-to perform of the Windows Update is available at the following URL:
- [https://www.mycert.org.my/portal/articles-content?menu=b9f3fdda-c343-4cb4-99a7-a7506cfb13ba&id=62275f48-f209-4440-af1a-c5425c875fa4](https://www.mycert.org.my/portal/articles-content?menu=b9f3fdda-c343-4cb4-99a7-a7506cfb13ba&id=62275f48-f209-4440-af1a-c5425c875fa4
)
Generally, MyCERT advises the users of this software to be updated with the latest security announcements by the vendor and follow best practice security policies to determine which updates should be applied.
For further enquiries, please contact MyCERT through the following channels:
E-mail : [[email protected]](/cdn-cgi/l/email-protection#5d3e243f382f6464641d3e243f382f2e383e282f342924733024) or [[email protected]](/cdn-cgi/l/email-protection#4b2632282e393f0b2632282e393f6524392c652632) 
Phone: 1-300-88-2999 (monitored during business hours)
Fax: +603 89453442 
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**4.0 References**
- US-CERT: Microsoft Releases April 2016 Security Bulletin [online],
<https://www.us-cert.gov/ncas/current-activity/2016/04/12/Microsoft-Releases-April-2016-Security-Bulletin>
- Microsoft Security Bulletin Summary for April 2016 [online],
<https://technet.microsoft.com/en-us/library/security/ms16-Apr>