Cumulative Security Update for Internet Explorer (MS14-056)

ITS Advisory Number: 
2014-086
Date(s) Issued: 
Tuesday, October 14, 2014
Subject: 
Cumulative Security Update for Internet Explorer (MS14-056)
Overview: 

Multiple vulnerabilities have been discovered in Microsoft's web browser, Internet Explorer. Successful exploitation can occur when a user visits a specially crafted website. An attacker who successfully exploits these vulnerabilities could gain the same user rights as the current user. Depending on the privileges associated with the user, an attacker could install programs; view, change, or delete data; or create new accounts with full user rights.

Systems Affected: 
  • Internet Explorer 11
  • 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
BUSINESS
Large and medium business entities: 
High
Small business entities: 
High
Home Users: 
High
Description: 

Multiple vulnerabilities have been discovered in Microsoft's web browser, Internet Explorer, the most severe of these could result in remote code execution. Successful exploitation can occur when a user visits a specially crafted website. The following vulnerabilities have been reported:

When Internet Explorer does not properly validate permissions under specific conditions, potentially allowing script to be run with elevated privileges.
Remote code execution vulnerabilities exist when Internet Explorer improperly accesses objects in memory.
When Internet Explorer does not use the Address Space Layout Randomization (ASLR) security feature, it allows an attacker to predict the memory offsets of specific instructions in a given call stack more reliably.

An attacker who successfully exploits these vulnerabilities could gain the same user rights as the current user. Depending on the privileges associated with the user, an attacker could install programs; view, change, or delete data; or create new accounts with full user rights.

Actions: 

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.
  • Configure Internet Explorer to prompt before running Active Scripting or disable Active Scripting in the Internet and local intranet security zone.
References: 

Microsoft:
https://technet.microsoft.com/en-us/library/security/ms14-056

CVE:
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4123
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4124
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4126
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4127
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4128
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4129
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4130
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4132
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4133
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4134
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4137
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4138
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4140
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4141