MS-ISAC CYBERSECURITY ADVISORIES

MS-ISAC ADVISORY NUMBER:
2016-025

DATE(S) ISSUED:
02/09/2016

SUBJECT:
Cumulative Security Update for Microsoft Edge (MS16-011)

OVERVIEW:

Multiple vulnerabilities have been discovered in Microsoft Edge that could allow for remote code execution. 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.

SYSTEM AFFECTED:

  • Windows 10

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 have been discovered in Microsoft Edge that could allow for remote code execution.Details of these vulnerabilities are as follows:

  • A Microsoft browser spoofing vulnerability exists that could allow a browser to be redirected to a malicious website. (CVE-2016-0077)

  • A security feature bypass vulnerability exists that could be used in conjunction with another vulnerability to run arbitrary code (CVE-2016-0080)

  • Multiple memory corruption vulnerabilities exist that could allow arbitrary code execution. (CVE-2016-0060, CVE-2016-0061, CVE-2016-0062, CVE-2016-0084)

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. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative 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.

REFERENCES:

Microsoft:

https://technet.microsoft.com/en-us/library/security/ms16-011.aspx

CVE:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0060

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0061

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0062

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0077

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0080

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0084