MS-ISAC CYBERSECURITY ADVISORIES

MS-ISAC ADVISORY NUMBER:
2016-157

DATE(S) ISSUED:
10/13/2016

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.

SYSTEMS AFFECTED:

· Google Chrome prior to 54.0.2840.59

RISK:

  • Government:
     · Large and medium government entities:High
     · Small government: 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 and Bookmarks (CVE-2016-5181)
  • Heap Overflow in Blink (CVE-2016-5182)
  • Use after free in PDFium (CVE-2016-5183, CVE-2016-5184)
  • Use after free in Blink. (CVE-2016-5185)
  • URL Spoofing. (CVE-2016-5187, CVE-2016-5189)
  • UI Spoofing. (CVE-2016-5188)
  • Cross-origin Bypass in Blink (CVE-2016-5192)
  • Out of Bounds read in DevTools. (CVE-2016-5186)
  • Universal XSS in Bookmarks (CVE-2016-5191)
  • Use after free in Internals (CVE-2016-5190)
  • Scheme Bypass (CVE-2016-5193)
  • Various fixes from internal audits, fuzzing and other initiatives (CVE-2016-5194)

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

  • 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:

https://googlechromereleases.blogspot.com/2016/10/stable-channel-update-for-desktop.html

 

CVE:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5181

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5182

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5183

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5184

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5185

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5186

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5187

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5188

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5189

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5190

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5191

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5192

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5193

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5194