# MA-477.052015: MyCERT Advisory - Microsoft Security Bulletin Summary for May 2015

**Date:** 13 May 2015  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-477.052015  
**Advisory ID:** MA-477.052015

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**1.0 Introduction**
Microsoft has released thirteen updates to address vulnerabilities in Microsoft Windows, Microsoft Internet Explorer, Microsoft SharePoint Server, Microsoft .NET, and Microsoft Office. Some of these vulnerabilities could allow elevation of privilege, denial of service, remote code execution, information disclosure, or security feature bypass. Users and administrators are encouraged to review Microsoft Security Bulletin Summary MS15-043 - MS15-055 and apply the necessary updates.
**2.0 The list of the Important vulnerabilities is as below:2.1    **Cumulative Security Update for Internet Explorer (3049563)**
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 these 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=533730>
**2.2    **Vulnerabilities in Microsoft Font Drivers Could Allow Remote Code Execution (3057110)**
This security update resolves one publicly disclosed and five privately reported vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if an attacker convinces a user to open a specially crafted document or visit an untrusted website that contains embedded TrueType fonts.
**Patch:** <http://go.microsoft.com/fwlink/?LinkId=533715>
**2.3   Vulnerability **in Windows Journal Could Allow Remote Code Execution (3046002)**
This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if an attacker convinces a user with a domain-configured system to connect to an attacker-controlled network. 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.
**Patch:** <http://go.microsoft.com/fwlink/?LinkId=533722>
**2.4    **Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3057181)**
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=533724>
**2.5    **Vulnerabilities in Microsoft SharePoint Server Could Allow Remote Code Execution (3058083)**
This security update resolves vulnerabilities in Microsoft Office server software. The vulnerabilities could allow remote code execution if an authenticated attacker sends specially crafted page content to a SharePoint server. An attacker who successfully exploited these vulnerabilities could run arbitrary code in the security context of the W3WP service account on the target SharePoint site.
Patch: <http://go.microsoft.com/fwlink/?LinkId=534002>
**2.6    **Vulnerabilities in .NET Framework Could Allow Elevation of Privilege (3057134)**
This security update resolves vulnerabilities in Microsoft .NET Framework. The most severe of the vulnerabilities could allow elevation of privilege if a user installs a specially crafted partial trust application.
**Patch:** <http://go.microsoft.com/fwlink/?LinkId=533716>
**2.7    **Vulnerability in Silverlight Could Allow Elevation of Privilege (3058985)**
This security update resolves a vulnerability in Microsoft Silverlight. The vulnerability could allow elevation of privilege if a specially crafted Silverlight application is run on an affected system. To exploit the vulnerability an attacker would first have to log on to the system or convince a logged on user to execute the specially crafted application.
**Patch:** <http://go.microsoft.com/fwlink/?LinkId=534625>
**2.8    **Vulnerability in Service Control Manager Could Allow Elevation of Privilege (3055642)**
This security update resolves a vulnerability in Windows Service Control Manager (SCM), which is caused when SCM improperly verifies impersonation levels. The vulnerability could allow elevation of privilege if an attacker first logs on to the system and then runs a specially crafted application designed to increase privileges.
**Patch:** <http://go.microsoft.com/fwlink/?LinkId=534268>
**2.9   **Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (3057191)**
This security update resolves vulnerabilities in Microsoft Windows. The more severe of these vulnerabilities could allow elevation of privilege if an attacker logs on locally and runs arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. An attacker must have valid logon credentials and be able to log on locally to exploit this vulnerability. The vulnerability cannot be exploited remotely or by anonymous users.
**Patch:** <http://go.microsoft.com/fwlink/?LinkId=533726>
**2.10Vulnerability in Windows Kernel Could Allow Security Feature Bypass (3050514)**
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow security feature bypass if an attacker logs on to an affected system and runs a specially crafted application.
**Patch:** <http://go.microsoft.com/fwlink/?LinkId=533731>
**2.11Vulnerabilities in JScript and VBScript Scripting Engines Could Allow Security Feature Bypass (3057263)**
This security update resolves ASLR security feature bypasses in the JScript and VBScript scripting engines in Microsoft Windows. An attacker could use one of these ASLR bypasses in conjunction with another vulnerability, such as a remote code execution vulnerability, to more reliably run arbitrary code on a target system.
**Patch:** <http://go.microsoft.com/fwlink/?LinkId=533729>
**2.12Vulnerability in Microsoft Management Console File Format Could Allow Denial of Service (3051768)**
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow denial of service if a remote, unauthenticated attacker convinces a user to open a share containing a specially crafted .msc file. However, an attacker would have no way of forcing a user to visit the share or view the file.
**Patch:** <http://go.microsoft.com/fwlink/?LinkId=533727>
**2.13Vulnerability in Schannel Could Allow Information Disclosure (3061518)**
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow information disclosure when Secure Channel (Schannel) allows the use of a weak Diffie-Hellman ephemeral (DFE) key length of 512 bits in an encrypted TLS session. Allowing 512-bit DHE keys makes DHE key exchanges weak and vulnerable to various attacks. A server needs to support 512-bit DHE key lengths for an attack to be successful; the minimum allowable DHE key length in default configurations of Windows servers is 1024 bits.
**Patch:** <http://go.microsoft.com/fwlink/?LinkId=536690>
**3.0    Recommendation**
Users and administrators 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#593a203b3c2b606060193a203b3c2b2a3c3a2c2b302d20773420) or [[email protected]](/cdn-cgi/l/email-protection#c8a5b1abadbabc88a5b1abadbabce6a7baafe6a5b1) 
Phone : 1-300-88-2999 (monitored during business hours)
Fax : +603 89453442 
Handphone : +60 19 2665850 (24x7 call incident reporting)
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**4.0     References**
- Microsoft Releases May 2015 Security Bulletin
<https://www.us-cert.gov/ncas/current-activity/2015/05/12/Microsoft-Releases-May-2015-Security-Bulletin>
- Microsoft Security Bulletin Summary for May 2015
<https://technet.microsoft.com/en-us/library/security/ms15-may.aspx>
- May 2015 Updates
<http://blogs.technet.com/b/msrc/archive/2015/05/12/may-2015-updates.aspx>
- Cisco Event Response: Microsoft Security Bulletin Release for May 2015
<http://www.cisco.com/web/about/security/intelligence/ERP_may15.html>