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Coastal Network Status - Issue Detail
Security
Alert

UPDATED: Vulnerability in Internet Explorer Could Allow Remote Code Execution
Posted: April 28, 2014, 1:45 pm
Last Updated: May 8, 2014, 9:55 am

DIS / SC-ISAC

Division of Information Security

South Carolina Information Sharing and Analysis Center

 

SECURITY ADVISORY

 

DATE ISSUED:        4/28/2014

                                    5/1/2014  UPDATED

SUBJECT:    Vulnerability in Internet Explorer Could Allow Remote Code Execution

EXECUTIVE SUMMARY:

A vulnerability is currently being exploited in Microsoft's web browser, Internet Explorer, which could allow an attacker to take complete control of an affected system. Successful exploitation of this vulnerability could result in an attacker gaining the same privileges as the logged on user. 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

UPDATED EXECUTIVE SUMMARY

Microsoft released updates for Internet Explorer versions 6 through 11 on Windows XP and newer workstations, and Windows server 2003 and newer servers.  Please note that a security update for XP is available, however, organizations and users are strongly recommended to expedite the migration plans for a newer operating system as Windows XP is end-of-life as of April 2013 and will no longer be supported by Microsoft. 

THREAT INTELLIGENCE:

 

It should be noted that there is currently no patch available for this vulnerability and it is currently being exploited in the wild. Microsoft is reporting targeted attacks that attempt to exploit this vulnerability in Internet Explorer 6 through Internet Explorer 11.

 

TECHNICAL SUMMARY:

 

A vulnerability has been reported affecting all versions of Internet Explorer that could allow for remote code execution. This vulnerability exists due to the way that Internet Explorer accesses an object in memory that has been deleted or has not been properly allocated. The vulnerability may corrupt memory in a way that could allow an attacker to execute arbitrary code, in the context of the current user, within Internet Explorer. An attacker could host a specially crafted website designed to take advantage of this vulnerability, and then convince or trick an unsuspecting user to visit their site.

 

Successful exploitation of this vulnerability could result in an attacker gaining the same privileges as the logged on user. 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 there is currently no patch available for this vulnerability and it is currently being exploited in the wild.  Microsoft is reporting targeted attacks that attempt to exploit this vulnerability in Internet Explorer 6 and Internet Explorer 11.

 

SYSTEMS AFFECTED:

  • Microsoft Internet Explorer 6
  • Microsoft Internet Explorer 7
  • Microsoft Internet Explorer 8
  • Microsoft Internet Explorer 9
  • Microsoft Internet Explorer 10
  • Microsoft Internet Explorer 11 

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:

 

·       Consider using an alternate browser until a patch is made available for the vulnerable versions of Internet Explorer.   

·       Consider implementing Microsoft’s Enhanced Mitigation Experience Toolkit (EMET) as it has been reported to make the vulnerability difficult to exploit.

·       Run Internet Explorer with Protected Mode enabled

·       Set Internet and Local intranet security zone settings to "High"                                                                                 

·       Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.

·       Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack

 

 

 

UPDATED RECOMMENDATIONS

  • Apply appropriate patches provided by Microsoft to vulnerable systems immediately after appropriate testing.
  • Run Internet Explorer with Enhanced Protected Mode enabled
  • Consider implementing Microsoft’s Enhanced Mitigation Experience Toolkit (EMET) Version 4.0 as it has been reported to make the vulnerability difficult to exploit. Please note that earlier versions of EMET is not effective for this vulnerability.

 

REFERENCES:

 

Fireeye:

 

http://www.fireeye.com/blog/uncategorized/2014/04/new-zero-day-exploit-targeting-internet-explorer-versions-9-through-11-identified-in-targeted-attacks.html

 

Microsoft:

https://technet.microsoft.com/en-US/library/security/2963983

http://technet.microsoft.com/en-US/security/jj653751

 

CVE:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1776

 

UPDATED REFERENCES:

 

Microsoft:

 

https://technet.microsoft.com/library/security/ms14-021

 

 

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

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/site-page/sc-isac-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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