# MA-326.082012: MyCERT Alert - Microsoft Security Bulletin Summary For August 2012

**Date:** 15 Aug 2012  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-326.082012  
**Advisory ID:** MA-326.082012

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**1.0 Introduction**
Microsoft has released 9 security bulletins for August 2012. Five of them are rated Critical and four of them are Important
**2.0 The list of the critical vulnerabilities are as below:**
> **2.1 Cumulative Security Update for Internet Explorer**
> This security update resolves four privately reported vulnerabilities in Internet Explorer. The most severe vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. An attacker who successfully exploited any of these vulnerabilities could gain the same user rights as the current user. 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.
> Patch: <http://go.microsoft.com/fwlink/?LinkId=255327>
>
> **2.2 Vulnerability in Remote Desktop Could Allow Remote Code Execution**
> This security update resolves a privately reported vulnerability in the Remote Desktop Protocol. The vulnerability could allow remote code execution if an attacker sends a sequence of specially crafted RDP packets to an affected system. By default, the Remote Desktop Protocol (RDP) is not enabled on any Windows operating system. Systems that do not have RDP enabled are not at risk.
> Patch: <http://go.microsoft.com/fwlink/?LinkId=257906>
>
> **2.3 Vulnerabilities in Windows Networking Components Could Allow Remote Code Execution**
> This security update resolves four privately reported vulnerabilities in Microsoft Windows. The most severe of these vulnerabilities could allow remote code execution if an attacker sends a specially crafted response to a Windows print spooler request. Firewall best practices and standard default firewall configurations can help protect networks from attacks that originate outside the enterprise perimeter. Best practices recommend that systems connected directly to the Internet have a minimal number of ports exposed.
> Patch: <http://go.microsoft.com/fwlink/?LinkId=257914>
>
> **2.4 Vulnerability in Windows Common Controls Could Allow Remote Code Execution**
> This security update resolves a privately reported vulnerability in Windows common controls. The vulnerability could allow remote code execution if a user visits a website containing specially crafted content designed to exploit the vulnerability. In all cases, however, an attacker would have no way to force users to visit such a website. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or Instant Messenger message that takes them to the attacker's website. The malicious file could be sent as an email attachment as well, but the attacker would have to convince the user to open the attachment in order to exploit the vulnerability.
> Patch: <http://go.microsoft.com/fwlink/?LinkId=254386>
>
> **2.5 Vulnerabilities in Microsoft Exchange Server WebReady Document Viewing Could Allow Remote Code Execution**
> This security update resolves publicly disclosed vulnerabilities in Microsoft Exchange Server WebReady Document Viewing. The vulnerabilities could allow remote code execution in the security context of the transcoding service on the Exchange server if a user previews a specially crafted file using Outlook Web App (OWA). The transcoding service in Exchange that is used for WebReady Document Viewing is running in the LocalService account. The LocalService account has minimum privileges on the local computer and presents anonymous credentials on the network.
> Patch: <http://go.microsoft.com/fwlink/?LinkId=259630>
**3.0The list of the Important vulnerabilities are as below:**
> **3.1 Vulnerability in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege**
> This security update resolves one of the privately reported vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker logs on to the system and runs a specially crafted application. An attacker must have valid logon credentials and be able to log on locally to exploit this vulnerability.
> Patch: <http://go.microsoft.com/fwlink/?LinkId=257907>
>
> **3.2 Vulnerability in JScript and VBScript Engines Could Allow Remote Code Execution**
> This security update resolves a privately reported vulnerability in the JScript and VBScript scripting engines on 64-bit versions of Microsoft Windows. The vulnerability could allow remote code execution if a user visited a specially crafted website. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or Instant Messenger message that takes users to the attacker's website.
> Patch: <http://go.microsoft.com/fwlink/?LinkId=256487>
>
> **3.3 Vulnerability in Microsoft Office Could Allow Remote Code Execution**
> This security update resolves one privately reported vulnerability in Microsoft Office. The vulnerability could allow remote code execution if a user opens a specially crafted file or embeds a specially crafted Computer Graphics Metafile (CGM) graphics file into an Office file. An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. 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.
> Patch: <http://go.microsoft.com/fwlink/?LinkID=257684>
>
> **3.4 Vulnerability in Microsoft Visio Could Allow Remote Code Execution**
> This security update resolves a privately reported vulnerability in Microsoft Office. The vulnerability could allow remote code execution if a user opens a specially crafted Visio file. An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. 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.
> Patch: <http://go.microsoft.com/fwlink/?LinkId=255002>
**4.0 Recommendations**
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. For further enquiries, please contact MyCERT through the following channels:
E-mail : [[email protected]](/cdn-cgi/l/email-protection#c4a9bda7a1b6b084a9bda7a1b6b0eaabb6a3eaa9bd)
Phone : 1-300-88-2999 (monitored during business hours)
Fax : +603 89453442
Handphone : +60 19 2665850 (24x7 call incident reporting)
SMS : CYBER999 REPORT to 15888
Business Hours : Mon - Fri 08:30 -17:30 MYT
Web: [https://www.mycert.org.my](https://www.mycert.org.my/)
**5.0 References**
i. <http://technet.microsoft.com/en-us/security/bulletin/ms12-aug>
ii. <http://blogs.technet.com/b/msrc/archive/2012/08/14/august-2012-security-updates.aspx>