(CVE-2024-6290, CVE-2024-6292, CVE-2024-6293) Description

These vulnerabilities are classified as Use-after-free (UAF) flaws in Dawn, a critical component of Google Chrome’s graphics pipeline. They affect Google Chrome versions prior to 126.0.6478.126.

The vulnerabilities allow a remote attacker to potentially exploit heap corruption via a crafted HTML page. Specifically:

1. Nature of the Vulnerability: These are memory corruption flaws where the program continues to use a pointer after the memory it points to has been freed.
2. Attack Vector: An attacker could craft a malicious HTML page designed to trigger the use of previously freed memory in Dawn.
3. Potential Impact: If successfully exploited, these vulnerabilities could allow an attacker to:
   
   • Execute arbitrary code on the victim’s system
   • Cause browser crashes
   • Potentially access or manipulate sensitive data
4. Severity: These vulnerabilities are rated as High severity in the Chromium security scale.
5. Exploitability: The use of previously-freed memory can have various adverse consequences, ranging from the corruption of valid data to the execution of arbitrary code, depending on the specific circumstances of the flaw.
6. Root Cause: These vulnerabilities likely stem from improper handling of memory allocation and deallocation in the Dawn component, possibly due to error conditions, exceptional circumstances, or confusion over which part of the program is responsible for freeing memory.

What is Affected By (CVE-2024-6290, CVE-2024-6292, CVE-2024-6293)

Mitigation and Remediation For (CVE-2024-6290, CVE-2024-6292, CVE-2024-6293)

• Update Google Chrome:
  
  • The primary and most crucial step is to update Google Chrome to version 126.0.6478.126 or later.
  • For Windows and Mac: Update to version 126.0.6478.126/127 or later.
  • For Linux: Update to version 126.0.6478.126 or later.
• Enable Automatic Updates:
  
  • Configure Chrome to automatically install updates to ensure timely application of security patches.
• Implement the Principle of Least Privilege:
  
  • Run Chrome and other software with non-administrative privileges to minimize the impact of potential attacks.
• Enable Anti-exploitation Features:
  
  • Utilize built-in security features like Microsoft Data Execution Prevention (DEP) on Windows.
  • On Mac, ensure System Integrity Protection (SIP) and Gatekeeper are enabled.
• Use DNS Filtering and URL Filters:
  
  • Implement DNS filtering services to block access to known malicious domains.
  • Enforce and update network-based URL filters to limit connections to potentially malicious websites.
• User Education:
  
  • Train users to recognize social engineering attacks and practice safe browsing habits.
  • Educate users about the importance of keeping software updated.
• Application Isolation:
  
  • Consider running web browsers in sandboxed environments when possible.
• Maintain a Robust Vulnerability Management Process:
  
  • Establish and maintain a documented vulnerability management process.
  • Perform automated application patch management on a monthly or more frequent basis.
• Restrict Web-Based Content:
  
  • Limit use of certain websites, block downloads/attachments, and restrict browser extensions where appropriate.