MS-ISAC CYBERSECURITY ADVISORIES

MS-ISAC ADVISORY NUMBER:
2017-022

DATE(S) ISSUED:
03/14/2017

SUBJECT:
Cumulative Security Update for Microsoft Edge (MS17-007)

OVERVIEW:

Multiple vulnerabilities have been discovered in Microsoft Edge, the most severe of which could allow remote code execution if a user views a specially crafted web page. Microsoft Edge replaced Internet Explorer as the default browser on Windows 10. Successful exploitation of the most severe 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. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

THREAT INTELLIGENCE:

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

 

SYSTEMS AFFECTED:

·Microsoft Windows 10

·Microsoft Windows Server 2016

 

RISK:

Government:

·Large and medium government entities:High

·Small government entities:Medium

Businesses:

·Large and medium business entities:High

·Small business entities:Medium

Home users: Low

 

TECHNICAL SUMMARY:

Multiple vulnerabilities have been discovered in Microsoft Edge, the most severe of which could allow for remote code execution if a user views a specially crafted web page. Details of these vulnerabilities are as follows:

·Multiple remote code execution vulnerabilities exist in the way affected Microsoft scripting engines render when handling objects in memory. (CVE-2017-0010, CVE-2017-0015, CVE-2017-0032, CVE-2017-0035, CVE-2017-0067, CVE-2017-0070, CVE-2017-0071, CVE-2017-0094, CVE-2017-0131, CVE-2017-0132, CVE-2017-0133, CVE-2017-0134, CVE-2017-0136, CVE-2017-0137, CVE-2017-0138, CVE-2017-0141, CVE-2017-0150, CVE-2017-0151)

·A remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory. (CVE-2017-0037)

·A remote code execution vulnerability exists when Microsoft Windows PDF Library improperly handles objects in memory. (CVE-2017-0023)

· A remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory. (CVE-2017-0034)

· Multiple information disclosure vulnerabilities exist in the way that the affected components handle objects in memory. (CVE-2017-009, CVE-2017-0011, CVE-2017-0017, CVE-2017-0065, CVE-2017-0068)

· Three spoofing vulnerabilities exist when a Microsoft browser does not properly parse HTTP responses. (CVE-2017-0012, CVE-2017-0033, CVE-2017-0069)

· Three security feature bypass vulnerabilities exist when Microsoft Edge fails to correctly apply Same Origin Policy for HTML elements present in other browser windows. (CVE-2017-0066, CVE-2017-0135, CVE-2017-0140)

Successful exploitation of the most severe 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. Users 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.

· Apply the Principle of Least Privilege to all systems and services.

REFERENCES:

Microsoft:

https://technet.microsoft.com/en-us/library/security/ms17-007.aspx

 

CVE:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0009

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0010

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0011

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0012

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0015

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0017

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0023

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0032

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0033

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0034

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0035

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0037

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0065

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0066

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0067

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0068

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0069

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0070

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0071

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0094

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0131

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0132

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0133

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0134

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0135

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0136

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0137

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0138

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0140

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0141

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0150

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0151