This Multi-State Information Sharing and Analysis Center (MS-ISAC) Advisory is being provided to assist agencies, organizations, and individuals in guarding against the persistent malicious actions of cybercriminals. A vulnerability has been discovered in Google Chrome, which could allow for arbitrary code execution. Successful exploitation of this vulnerability could allow for arbitrary code execution in the context of the logged on user. Depending on the privileges associated with the user an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

Threat Intelligence
There are reports of this vulnerability being exploited in the wild.

Systems Affected
Chrome versions prior to 124.0.6367.207/.208 for Windows and Mac
Chrome versions prior to 124.0.6367.207 for Linux

Risk
1. Government:

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

2. Businesses:
– Large and medium business entities: High
– Small business entities: Medium

3. Home Users – Low

Recommendations

• Apply appropriate updates provided by Google to vulnerable systems immediately after
  appropriate testing.
• Apply the Principle of Least Privilege to all systems and services. Run all software as a
  non-privileged user (one without administrative privileges) to diminish the effects of a
  successful attack.
• Restrict execution of code to a virtual environment on or in transit to an endpoint
  system.
• Use capabilities to detect and block conditions that may lead to or be indicative of a
  software exploit occurring.
• Restrict use of certain websites, block downloads/attachments, block JavaScript,
  restrict browser extensions, etc.
• Inform and educate users regarding the threats posed by hypertext links contained in
  emails or attachments especially from untrusted sources. Remind users not to visit
  untrusted websites or follow links provided by unknown or untrusted sources

References
Google:
https://chromereleases.googleblog.com/2024/05/stable-channel-update-for-desktop_13.html
CVE:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-4761

Reporting

The NJCCIC encourages recipients who discover signs of malicious cyber activity to contact the NJCCIC via the cyber incident report form at www.cyber.nj.gov/report.

For any further questions, contact us here at Cyber Command.