CIS CYBER SECURITY ADVISORIES

MS-ISAC CYBER SECURITY ADVISORY NUMBER:
2013-108

DATE(S) ISSUED:
12/04/2013

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

OVERVIEW:

Multiple vulnerabilities have been discovered in Google Chrome that could allow remote code execution or cause denial-of-service conditions. 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 may result in either an attacker gaining the same privileges as the logged on user. Depending on the privileges associated with the user, an attacker could install programs; view, change, or delete data; or create new accounts with full user rights.

SYSTEMS AFFECTED:

  • Google Chrome Prior to 31.0.1650.63

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

DESCRIPTION:

Multiple vulnerabilities have been discovered in Google Chrome. Details of these vulnerabilities are as follows:

  • A session-fixation vulnerability in sync related to 302 redirects. [CVE-2013-6634]
  • A use-after-free issue exists in editing. [CVE-2013-6635]
  • Multiple unspecified issues affect the application. [CVE-2013-6637]
  • An address bar spoofing vulnerability exits related to modal dialogs. [CVE-2013-6636]
  • A buffer-overflow vulnerability exists in the v8. [CVE-2013-6638]
  • An out-of-bounds write error in the v8. [CVE-2013-6639]
  • An out-of-bounds read issue in the v8. [CVE-2013-6640]


Successful exploitation of some of the above vulnerabilities could result in an attacker gaining the same privileges as the user. Depending on the privileges associated with the user, an attacker could install programs; view, change, delete data; or create new accounts with full user rights. 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/2013/12/stable-channel-update.html

CVE:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6634
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6635
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6636
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6637
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6638
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6639
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6640

SecurityFocus:

http://www.securityfocus.com/bid/64078