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Coastal Network Status - Issue Detail
Security
Alert

Vulnerability in Microsoft Office Could Allow Remote Code Execution
Posted: June 12, 2013, 1:04 pm
Last Updated: August 12, 2013, 2:44 pm

South Carolina Information Sharing and Analysis Center

 

SC INFORMATION SHARING AND ANALYSIS CENTER BULLETIN

 

DATE ISSUED:        6/11/2013

                                               

SUBJECT:                Vulnerability in Microsoft Office Could Allow Remote Code Execution

 

OVERVIEW:


A vulnerability has been discovered in Microsoft Office that could result in remote code execution. Exploitation may occur if a user opens a specially crafted Office file in an affected version of Microsoft Office. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

 

It should be noted that this vulnerability is being actively exploited in the wild.  

 

DESCRIPTION:

 

A remote code execution vulnerability exists in the way that Microsoft Office processes specially crafted content in Office files. This vulnerability can be exploited if a user opens a specially crafted file or previews a specially crafted e-mail with an affected version of Microsoft Office that uses Microsoft Word as the email reader. By default, Outlook 2003 does not use Microsoft Word as the email reader. The issue could also be triggered if the file is sent as an email attachment, or is hosted on a website.


Successful exploitation of this vulnerability could allow the attacker to 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.

 

It should be noted that this vulnerability is being actively exploited in the wild.

 

 SYSTEMS AFFECTED:

 

  • Microsoft Office 2003 Service Pack 3
  • Microsoft Office for Mac 2011

 

RISK:

 

Government:

 

Large and medium government entities: High

Small government entities: High

 

Businesses:

 

Large and medium business entities: High

Small business entities: High

 

Home users: High

 

Recommendations:

We recommend the following actions be taken:

 

  • Apply appropriate patches provided by Microsoft to vulnerable systems immediately after appropriate testing.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Consider viewing emails in plain text.
  • Remind users not to open e-mail attachments from unknown users or suspicious e-mails from trusted sources.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.

 

References:

 

Microsoft:


http://technet.microsoft.com/en-us/security/bulletin/ms13-051


CVE:


http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1331

 

 Please feel free to contact the SC ISAC if you have any questions or need any additional information.

 

The SC ISAC will provide amplifying information as it becomes available.

 

SC-ISAC Contact Information

 

Email: SC-ISAC@cio.sc.gov

SC ISAC Security Line: 803-896-1650

24-hour hotline: +1 803-896-0001  option # 2

Fax: +1 803-896-0375

 

Postal address:

 

SC-ISAC

DSIT Budget and Control Board

4430 Broad River Road

Columbia S.C. 29210

SC-ISAC is available via hotline 08:00-17:00 EST (GMT-5)/ EDT (GMT-4)

Monday through Friday

 

Using Encryption

 

We strongly urge you to encrypt sensitive information sent by email. Our

public PGP key is available from:

 

https://sc-isac.sc.gov/public.key

 

NO WARRANTY

 

Any material furnished by SC-ISAC is furnished on an "as is" basis.

 

SC-ISAC makes no warranties of any kind, either expressed or implied as to

any matter including, but not limited to, warranty of fitness for a particular

purpose or merchantability, exclusivity or results obtained from use of the

material. SC-ISAC does not make any warranty of any kind with respect to

freedom from patent, trademark, or copyright infringement.

 

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