MS-ISAC CYBERSECURITY ADVISORIES

MS-ISAC ADVISORY NUMBER:
2016-127

DATE(S) ISSUED:
09/01/2016

SUBJECT:
Multiple Vulnerabilities in Google Chrome Could Allow for Remote Code Execution

OVERVIEW:

Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could result in remote code execution. Google Chrome is a web browser used to access the Internet. These vulnerabilities can be exploited if a user visits, or is redirected to, a specially crafted web page. Successful exploitation of these vulnerabilities could allow an attacker to execute remote code in the context of the browser, obtain sensitive information, bypass security restrictions, or cause denial-of-service conditions.

THREAT INTELLIGENCE:

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

SYSTEM AFFECTED:

Google Chrome prior to 53.0.2785.89

 

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 Google Chrome, the most severe of which could result in remote code execution. These vulnerabilities can be exploited if a user visits, or is redirected to, a specially crafted web page. Details of the vulnerabilities are as follows:

  • Universal XSS in Blink. (CVE-2016-5147, CVE-2016-5148)
  • Script injection in extensions. (CVE-2016-5149) Use after free in Blink. (CVE-2016-5150)
  • Use after free in PDFium. (CVE-2016-5151)
  • Heap overflow in PDFium. (CVE-2016-5152, CVE-2016-5154, CVE-2016-5157, CVE-2016-5158, CVE-2016-5159.)
  • Use after destruction in Blink. (CVE-2016-5153)
  • Address bar spoofing. (CVE-2016-5155)
  • Use after free in event bindings. (CVE-2016-5156)
  • Type confusion in Blink. (CVE-2016-5161)
  • Extensions web accessible resources bypass. (CVE-2016-5162)
  • Address bar spoofing. (CVE-2016-5163)
  • Universal XSS using DevTools. (CVE-2016-5164)
  • Script injection in DevTools. (CVE-2016-5165)
  • SMB Relay Attack via Save Page As. (CVE-2016-5166)
  • Extensions web accessible resources bypass. (CVE-2016-5160)
Successful exploitation of these vulnerabilities could allow an attacker to execute remote code in the context of the browser, obtain sensitive information, bypass security restrictions, or cause denial-of-service conditions.

RECOMMENDATIONS:

We recommend the following actions be taken:

• Apply appropriate patches provided by Google 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 from un-trusted sources.

REFERENCES:

Google:

http://googlechromereleases.blogspot.com/2016/08/stable-channel-update-for-desktop_31.html

 

CVE:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5147

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5148

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5149

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5150

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5151

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5152

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5153

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5154

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5155

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5156

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5157

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5158

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5159

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5161

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5162

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5163

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5164

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5165

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5166

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5160