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The following cyber advisory was issued by the New York State Office of Information Technology Services and is intended for State government entities. The information may or may not be applicable to the general public and, accordingly, the State does not warrant its use for any specific purposes.

ITS ADVISORY NUMBER:
2013-110

DATE(S) ISSUED:
11/13/2013

SUBJECT:
Cumulative Google Chrome Updates

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 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 31.0.1650.48

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:

  • [CVE-2013-6621] Use after free related to speech input elements.
  • [CVE-2013-6622] Use after free related to media elements.
  • [CVE-2013-6623] Out of bounds read in SVG.
  • [CVE-2013-6624] Use after free related to "id" attribute strings.
  • [CVE-2013-6625] Use after free in DOM ranges.
  • [CVE-2013-6626] Address bar spoofing related to interstitial warnings.
  • [CVE-2013-6627] Out of bounds read in HTTP parsing.
  • [CVE-2013-6628] Issue with certificates not being checked during TLS renegotiation.

Successful exploitation of these vulnerabilities may result in the 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.

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.
  • Remind users not to download or open files from un-trusted websites.

REFERENCES:
Google:
http://googlechromereleases.blogspot.com/2013/11/stable-channel-update.html

CVE:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6621
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6622
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6623
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6624
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6625
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6626
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6627
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6628