On Thursday, May 10, 2018, Google released a stable channel update for multiple vulnerabilities discovered in Google Chrome, the worst of which could allow for arbitrary code execution.
What It Is:
Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could result in 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.
See the original Stable Channel Update from Chrome.
There are currently no reports of these vulnerabilities being exploited in the wild.
What It Means:
If your business or organization is running Google Chrome, you will need to install the security update immediately to address these vulnerabilities to prevent a possible security breach.
Systems Affected Include:
This advisory affects the following Google products:
• Google Chrome prior to 66.0.3359.170
• Large and medium government entities: High
• Small government entities: Medium
• Large and medium business entities: High
• Small business entities: Medium
Home users: Low
Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could result in arbitrary code execution. These vulnerabilities can be exploited if a user visits, or is redirected to, a specially crafted web page. Details of these vulnerabilities are as follows:
• Heap buffer overflow in PDFium. (CVE-2018-6120)
• Privilege escalation in extensions. (CVE-2018-6121)
• Type confusion in V8. (CVE-2018-6122)
• Chain leading to sandbox escape.
What To Do:
We recommend the following actions be taken:
• Apply the stable channel update 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.
• Apply the Principle of Least Privilege to all systems and services.
Negative Consequences of Lost or Stolen Data Include:
The loss or theft of proprietary data can have severe impacts, particularly if the compromise becomes public and sensitive information is exposed. Possible impacts include:
• Temporary or permanent loss of sensitive or proprietary information
• Disruption to regular operations
• Financial losses incurred to restore systems and files
• Potential harm to an organization’s reputation
Should your business or organization need assistance with the detection of vulnerabilities in Google products or an update of software to include patches, Dox can help. Please contact Dox if there is anything we can do to assist in securing your agency, business, or organization.
Thank you for your time and stay safe online.