Security Alerts - Cumulative Security Update for Internet Explorer (MS15-112)

Security Alerts - Cumulative Security Update for Internet Explorer (MS15-112)

Cumulative Security Update for Internet Explorer (MS15-112) 

           

EXECUTIVE SUMMARY:

Multiple vulnerabilities have been discovered in Microsoft's web browser, Internet Explorer. These vulnerabilities could allow an attacker to execute code in the context of the browser if a user views a specially crafted web page. 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.

 

THREAT INTELLIGENCE:

There are currently no reports of these vulnerabilities being exploited in the wild.

 

SYSTEMS AFFECTED:

  • Internet Explorer 7
  • Internet Explorer 8
  • Internet Explorer 9
  • Internet Explorer 10
  • Internet Explorer 11 

 

TECHNICAL SUMMARY:   

Microsoft Internet Explorer is prone to multiple vulnerabilities that could allow remote code execution. The vulnerabilities are as follows:

 

  • 22 memory corruption vulnerabilities could allow for remote code execution.
  • One information disclosure vulnerabilities.
  • One scripting engine memory corruption vulnerabilities that could allow for remote code execution.
  • One VBScript and Jscript ASLR Bypass vulnerability.

 

The most severe of these vulnerabilities could allow an attacker to execute remote code by luring a victim to visit a specially crafted malicious website. When the website is visited, the attacker's script will run within the context of the affected browser or with the same permissions as the affected user account. 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.

                                                                                                          

RECOMMENDATIONS:

We recommend the following actions be taken:

  • Apply appropriate updates immediately after appropriate testing.
  • Remind users not to visit websites or follow links provided by unknown or untrusted sources.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from untrusted sources.

 

RESOURCES:

Microsoft:

https://technet.microsoft.com/en-us/library/security/MS15-112

 

CVE:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2427

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6064

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6065

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6066

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6068

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6069

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6070

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6071

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6072

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6073

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6074

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6075

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6076

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6077

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6078

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6079

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6080

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6081

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6082

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6084

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6085

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6086

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6087

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6088

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6089

 

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