1. What is this vulnerability and why does it matter?

This vulnerability, identified as CVE-2024-0519, is an out-of-bounds memory access flaw found in the V8 JavaScript engine within Google Chrome. It matters because it allows a remote attacker to potentially exploit heap corruption by enticing a user to visit a specially crafted HTML page. Successful exploitation could lead to arbitrary code execution or denial of service, compromising the integrity and confidentiality of the affected system. This issue is rated with a Chromium security severity of High.

2. What are the CVSS score, severity level, and disclosure details?

• CVSS Score: 8.8
• Severity Level: High (based on Chromium security severity rating and CVSS score)
• Disclosure Details:
  • Published: 2024-01-16 21:14:49
  • Modified: 2025-10-21 23:05:28

3. Which products, vendors, systems, and versions are affected?

• Vendor: Google
• Product: Google Chrome
• Component: V8 JavaScript engine
• Affected Versions: All versions of Google Chrome prior to 120.0.6099.224 are vulnerable.

4. What is the technical root cause and attack vector?

• Technical Root Cause: The root cause is an out-of-bounds memory access within the V8 JavaScript engine. This type of flaw, categorized under CWE-787 (Out-of-bounds Write) and CWE-125 (Out-of-bounds Read), allows an attacker to read from or write to memory locations outside the intended buffer. In this specific case, it leads to heap corruption.
• Attack Vector: The attack vector is remote. Exploitation occurs via a crafted HTML page, meaning an attacker can deliver the malicious content through a website that a user visits.

5. How can this vulnerability be exploited?

This vulnerability can be exploited by a remote attacker who crafts a malicious HTML page. When a user running a vulnerable version of Google Chrome navigates to or loads this crafted page, the out-of-bounds memory access in the V8 engine is triggered. This can corrupt the heap memory, which can subsequently be leveraged by the attacker to execute arbitrary code within the context of the browser.

6. What mitigation steps and patches are available?

The primary mitigation step is to update Google Chrome to a patched version.

• Patch Availability: Google Chrome version 120.0.6099.224 and later versions contain the patch that resolves this vulnerability.
• Recommended Action: Users and administrators should update their Google Chrome installations immediately to version 120.0.6099.224 or a newer available version to eliminate the vulnerability.

7. How can vulnerable systems be detected?

Vulnerable systems can be detected by checking the installed version of the Google Chrome browser. Any installation of Google Chrome with a version number earlier than 120.0.6099.224 is considered vulnerable to CVE-2024-0519. This can typically be checked within the browser's "About Chrome" section.

10. What public intelligence references and advisories exist?

• CVE Identifier: CVE-2024-0519
• Chromium Security Advisory: The vulnerability is referenced in Chromium's security advisories with a "High" severity rating.

11. What is the risk assessment and urgency level?

• Risk Assessment: The risk associated with CVE-2024-0519 is significant. With a CVSS score of 8.8 and a Chromium security severity of High, this vulnerability presents a critical threat. The potential for heap corruption via a crafted HTML page means a remote attacker can compromise affected systems without requiring complex interaction beyond a user visiting a malicious website.
• Urgency Level: The urgency level for patching and mitigation is High. The presence of published active exploits indicates that this vulnerability is actively being targeted in the wild. Immediate action to update all affected Google Chrome installations is strongly recommended to prevent potential system compromise and data loss.