Multiple Vulnerabilities in Google Chrome Could Allow for Arbitrary Code Execution

ITS Advisory Number: 
2017-081
Date(s) Issued: 
Wednesday, September 6, 2017
Subject: 
Multiple Vulnerabilities in Google Chrome Could Allow for Arbitrary Code Execution
Overview: 

Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could allow for arbitrary 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 the most severe of these vulnerabilities could allow an attacker to execute arbitrary code in the context of the browser, obtain sensitive information, bypass security restrictions and perform unauthorized actions, or cause denial-of-service conditions.

Systems Affected: 
  • Google Chrome prior to 61.0.3163.79
RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
Medium
BUSINESS
Large and medium business entities: 
High
Small business entities: 
Medium
Home Users: 
Low
Description: 

 

Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could allow for arbitrary 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:

  • Use after free in PDFium. (CVE-2017-5111)
  • Heap buffer overflow in WebGL. (CVE-2017-5112)
  • Heap buffer overflow in Skia. (CVE-2017-5113)
  • Memory lifecycle issue in PDFium. (CVE-2017-5114)
  • Type confusion in V8. (CVE-2017-5115, CVE-2017-5116)
  • Use of uninitialized value in Skia. (CVE-2017-5117)
  • Bypass of Content Security Policy in Blink. (CVE-2017-5118)
  • Use of uninitialized value in Skia. (CVE-2017-5119)
  • Potential HTTPS downgrade during redirect navigation. (CVE-2017-5120)

Successful exploitation of the most severe of these vulnerabilities could allow an attacker to execute arbitrary code in the context of the browser, obtain sensitive information, bypass security restrictions and perform unauthorized actions, or cause denial-of-service conditions.

Actions: 
  • After appropriate testing, immediately apply appropriate patches provided by Google to vulnerable systems.
  • 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.
  • Apply the Principle of Least Privilege to all systems and services.