Security Alerts - Cumulative Security Update for Microsoft Edge (MS15-113)

Security Alerts - Cumulative Security Update for Microsoft Edge (MS15-113)

Cumulative Security Update for Microsoft Edge (MS15-113)

           

EXECUTIVE SUMMARY:

Multiple vulnerabilities have been discovered in Microsoft Edge that could allow for remote code execution or a security feature bypass. Microsoft Edge replaced Internet Explorer as the default browser on Windows 10.

 

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 no reports of these vulnerabilities being exploited in the wild. None of the vulnerabilities have been publicly disclosed.

 

SYSTEMS AFFECTED:

  • Microsoft Edge

 

TECHNICAL SUMMARY:                                                                                                             

Multiple vulnerabilities exist in Microsoft Edge due to the way objects in memory are improperly accessed. The vulnerabilities are as follows:

 

  • Three Memory Corruption Vulnerabilities (CVE-2015-6064, CVE-2015-6073, CVE-2015-6078)
  • One Address Space Layout Randomization Vulnerability (CVE-2015-6088) 

 

These vulnerabilities could allow an attacker to execute remote code by luring a victim to a malicious website. Successful exploitation of these vulnerabilities could result in an attacker gaining the same rights as the current user. If the current user is logged on with administrative user rights 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 visit un-trusted websites or follow links provided by unknown or un-trusted sources.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments, especially those from un-trusted sources.

 

RESOURCES:

Microsoft:

https://technet.microsoft.com/library/security/MS15-113

 

CVE:

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

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

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

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

 

**********************************************************************************************************************************************************************************************************************************************************************************************************

 

 VULNERABILITY IN MICROSOFT WINDOWS JOURNAL COULD ALLOW REMOTE CODE EXECUTION (MS15-114)

 

 

EXECUTIVE SUMMARY:

A heap overflow vulnerability has been discovered in Microsoft Windows Journal that could allow remote code execution. This vulnerability is triggered if a user opens a specially crafted Microsoft Journal (.jnt) file. Successful exploitation of this vulnerability 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 no reports of this vulnerability being exploited in the wild.

 

SYSTEM AFFECTED:

  • Windows Vista
  • Windows 7
  • Windows Server 2008
  • Windows Server 2008 R2

 

TECHNICAL SUMMARY:

A heap overflow vulnerability has been discovered in Microsoft Windows Journal, which could allow for remote code execution when handling specially crafted Journal (.jnt) files. In an email attack scenario, an attacker could exploit this vulnerability by sending an email enticing a user to open an attached specially crafted Journal file. Successful exploitation of this vulnerability could result in the attacker gaining the same rights 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. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. (CVE-2015-6097)

 

RECOMMENDATIONS:

We recommend the following actions be taken:

  • Apply appropriate patches provided by Microsoft to vulnerable systems immediately after appropriate testing.
  • If patching is not possible immediately, multiple workarounds are listed in the Microsoft reference below.
  • 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.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources.

 

RESOURCES:

Microsoft:

https://technet.microsoft.com/en-us/library/security/ms15-114.aspx

 

CVE:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6097

 

 

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