CIS CYBER SECURITY ADVISORIES

MS-ISAC CYBER SECURITY ADVISORY NUMBER:
2014-004

DATE(S) ISSUED:
01/15/2014

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

OVERVIEW:

EXECUTIVE SUMMARY:

Multiple vulnerabilities have been discovered in Google Chrome that could result in several issues including 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 result in an attacker gaining the same privileges as the affected application. Depending on the privileges associated with the application, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

THREAT INTELLIGENCE:

At this time these vulnerabilities are not publicly disclosed and there is no known proof-of-concept code available.

SYSTEMS AFFECTED:

  • Google Chrome Prior to 32.0.1700.76

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 Google Chrome. Details of the vulnerabilities are as follows:

  • A use-after-free issue in web workers. [CVE-2013-6646]
  • A use-after-free issue related to forms. [CVE-2013-6641]
  • A use-after-free issue related to speech input elements. [CVE-2013-6645]
  • An address bar spoofing vulnerability exits in Chrome for Android. [CVE-2013-6642]
  • A security vulnerability exists due to unprompted sync with an attacker's Google account. [CVE-2013-6643]
  • Multiple unspecified issues affect the application. [CVE-2013-6644]

Successful exploitation could result in an attacker gaining the same privileges as the affected application. Depending on the privileges associated with the application, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. An attacker could also spoof the URI that is presented to the victim. Failed exploit attempts will likely cause denial-of-service conditions.

RECOMMENDATIONS:

We recommend the following actions be taken:

  • Update vulnerable Google Chrome products immediately after appropriate testing by following the steps outlined by Google.
  • 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.
  • Do not open email attachments or click on URLs from unknown or un-trusted sources.

REFERENCES:

GOOGLE:

http://googlechromereleases.blogspot.com/2014/01/stable-channel-update.html

CVE:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6641
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6642
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6643
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6644
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6645
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6646