Vulnerabilities in Google Chrome Could Allow for Arbitrary Code Execution

Summary

Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could allow for arbitrary code execution. Successful exploitation of the most severe of these vulnerabilities could allow an attacker to execute arbitrary code in the context of the browser. Depending on the privileges associated with the application, an attacker could view, change, or delete data. If this application has been configured to have fewer user rights on the system, exploitation of the most severe of these vulnerabilities could have less impact than if it was configured with administrative rights.

Threat Intelligence

There are currently no reports of these vulnerabilities being exploited in the wild.

Systems Affected

• Google Chrome versions prior to 84.0.4147.105

Risk

Government:

• Large and medium government entities: High
• Small government entities: Medium

Businesses:

• Large and medium government entities: High
  Small government entities: Medium

Home Users: Low

Technical Summary

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 SCTP. (CVE-2020-6532)
• Type Confusion in V8. (CVE-2020-6537)
• Inappropriate implementation in WebView. (CVE-2020-6538)
• Use after free in CSS. (CVE-2020-6539)
• Heap buffer overflow in Skia. (CVE-2020-6540)
• Use after free in WebUSB. (CVE-2020-6541)

Recommendations

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.

Reference

Google

Reporting

We encourage recipients who discover signs of malicious cyber activity to contact us via the cyber incident report form by clicking here.

Please do not hesitate to contact us at njccic@cyber.nj.gov with any questions.