ITS ADVISORY NUMBER:
Cumulative Security Update for Internet Explorer (MS13-028)
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.
- 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
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.
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.
Acting Chief Information Security Officer
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