CIS CYBER SECURITY ADVISORIES

MS-ISAC CYBER SECURITY ADVISORY NUMBER:
2014-059

DATE(S) ISSUED:
07/08/2014

SUBJECT:
Cumulative Security Update for Internet Explorer (MS14-037)

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 one public and twenty-three privately disclosed vulnerabilities. There has not been any active exploitation or exploit code observed for any of these vulnerabilities at the time of their announcement.

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:

  • Twenty-three memory corruption vulnerabilities
  • One Certificate Security Feature Bypass vulnerability

These vulnerabilities could allow an attacker to execute remote code by luring a victim to a malicious website. When the website is visited, the attacker's script will run with same permissions as the affected user account. 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://support.microsoft.com/kb/2975687
https://technet.microsoft.com/library/security/ms14-037

CVE:
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1763
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1765
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2783
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2785
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2786
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2787
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2788
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2789
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2790
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2791
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2792
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2794
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2795
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2797
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2798
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2800
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2801
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2802
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2803
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2804
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2806
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2807
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2809
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2813