CIS CYBER SECURITY ADVISORIES

MS-ISAC CYBER SECURITY ADVISORY NUMBER:
2014-053

DATE(S) ISSUED:
06/10/2014

SUBJECT:
Cumulative Security Update for Internet Explorer (MS14-035)

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 two publically and fifty-seven 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:

  • Fifty-four memory corruption vulnerabilities
  • Three elevation of privilege vulnerabilities
  • One information disclosure vulnerability
  • One TLS server certificate renegotiation 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/2969262
https://technet.microsoft.com/library/security/ms14-035

CVE:
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0282
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1762
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1764
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1766
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1769
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1770
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1771
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1772
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1773
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1774
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1775
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1777
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1778
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1779
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1780
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1781
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1782
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1783
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1784
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1785
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1786
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1788
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1789
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1790
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1791
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1792
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1794
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1795
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1796
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1797
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1799
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1800
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1802
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1803
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1804
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1805
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2753
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2754
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2755
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2756
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2757
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2758
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2759
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2760
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2761
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2763
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2764
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2765
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2766
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2767
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2768
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2769
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2770
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2771
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2772
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2773
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2775
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2776
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2777