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Coastal Network Status - Issue Detail

Cumulative Security Update for Internet Explorer
Posted: June 12, 2013, 1:03 pm
Last Updated: August 12, 2013, 2:44 pm

South Carolina Information Sharing and Analysis Center




DATE ISSUED:        6/11/2013


SUBJECT:                Cumulative Security Update for Internet Explorer




Multiple vulnerabilities have been discovered in Microsoft's web browser, Internet Explorer, which could allow an attacker to take complete control of an affected system. Successful exploitation of these vulnerabilities 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.




Nineteen remote code execution vulnerabilities have been discovered in Internet Explorer. One of the vulnerabilities is caused when Internet Explorer improperly processes script while debugging a webpage. The remaining vulnerabilities occur due to the way Internet Explorer accesses objects in memory. These may be exploited if a user visits a web page that is specifically crafted to take advantage of the vulnerabilities. Successful exploitation of any of these vulnerabilities could result in an attacker taking complete control of the system.




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






Large and medium government entities: High

Small government entities: High




Large and medium business entities: High

Small business entities: High


Home users: High



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.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources.








 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



SC ISAC Security Line: 803-896-1650

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

Fax: +1 803-896-0375


Postal address:



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:




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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