CIS CYBER SECURITY ADVISORIES

MS-ISAC CYBER SECURITY ADVISORY NUMBER:
2014-094

DATE(S) ISSUED:
11/11/2014

SUBJECT:
Cumulative Security Update for Internet Explorer (MS14-065)

OVERVIEW:

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 elevated privileges on the system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

THREAT INTELLIGENCE:

This advisory covers sixteen privately disclosed vulnerabilities, which are not currently being exploited in the wild.

SYSTEM AFFECTED:

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

TECHNICAL SUMMARY:

Multiple vulnerabilities were discovered in Internet Explorer due to the way objects in memory are improperly accessed. The vulnerabilities are as follows:

  • Ten Memory Corruption Vulnerabilities
  • Two Elevation of Privilege Vulnerabilities
  • Three Cross-domain Information Disclosure Vulnerability
  • One Clipboard Information Disclosure Vulnerability
  • One ASLR Bypass Vulnerability

These vulnerabilities could allow an attacker to execute remote code using specially crafted website. When the website is visited, the attacker's script will run with same permissions as the affected user. Successful exploitation of these vulnerabilities could result in an attacker gaining elevated privileges on the system. 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 click links from unknown sources, or to click links without verifying the intended destination.

REFERENCES:

Microsoft:

https://technet.microsoft.com/library/security/MS14-065

CVE:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4143

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6337

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6341

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6342

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6343

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6344

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6347

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6348

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6351

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6353

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6349

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6350

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6340

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6345

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6346

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6323