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The following cyber advisory was issued by the New York State Office of Information Technology Services and is intended for State government entities. The information may or may not be applicable to the general public and, accordingly, the State does not warrant its use for any specific purposes.

ITS ADVISORY NUMBER:
2013-038

DATE(S) ISSUED:
4/09/2013

SUBJECT:
Cumulative Security Update for Internet Explorer (MS13-028)

OVERVIEW:

Vulnerabilities have been discovered in Microsoft's web browser, Internet Explorer, which could allow for remote code execution. Exploitation may occur if a user visits or is redirected to a web page which is specifically crafted to take advantage of the vulnerability. 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.

SYSTEMS AFFECTED:

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

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

DESCRIPTION:
Two remote code 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 deleted and could 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.

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.
  • 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/MS13-028

CVE:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1303
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1304

Security Focus:
http://www.securityfocus.com/bid/58851
http://www.securityfocus.com/bid/58850