South Carolina Information Sharing and Analysis Center
SC INFORMATION SHARING AND ANALYSIS CENTER BULLETIN
DATE ISSUED: 11/15/2012
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.
Three remote code execution vulnerabilities have been discovered in Internet Explorer. These vulnerabilities occur due to the way Internet Explorer accesses objects in memory that have not been properly initialized or deleted. These may be exploited if a user visits a web page that is specifically crafted to take advantage of the vulnerabilities. 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.
· Internet Explorer 9
- 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
Fax: +1 803-896-0375
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
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
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