CVE-2021-38013 : Security Advisory and Response

A heap buffer overflow vulnerability in fingerprint recognition in Google Chrome on ChromeOS prior to version 96.0.4664.45 could allow a remote attacker to potentially escape the sandbox via a crafted HTML page.

Understanding CVE-2021-38013

This section provides insights into the nature and impact of the CVE-2021-38013 vulnerability.

What is CVE-2021-38013?

The CVE-2021-38013 vulnerability is specifically a heap buffer overflow issue in the fingerprint recognition component of Google Chrome. Attackers who exploited this vulnerability could potentially escape the sandbox through a maliciously crafted HTML page.

The Impact of CVE-2021-38013

The impact of this vulnerability is significant as it allows a remote attacker who has already compromised a WebUI renderer process to escalate their privileges and potentially execute arbitrary code outside the browser's sandbox.

Technical Details of CVE-2021-38013

In this section, we delve deeper into the technical aspects of CVE-2021-38013.

Vulnerability Description

The vulnerability stems from a heap buffer overflow in the fingerprint recognition functionality of Google Chrome on ChromeOS versions prior to 96.0.4664.45. This flaw could be exploited by an attacker to escape the browser's sandbox and execute unauthorized actions.

Affected Systems and Versions

Google Chrome on ChromeOS versions earlier than 96.0.4664.45 is affected by this vulnerability. Users with vulnerable versions are at risk of exploitation by malicious actors.

Exploitation Mechanism

To exploit CVE-2021-38013, an attacker needs to compromise a WebUI renderer process, after which they can leverage a crafted HTML page to trigger a heap buffer overflow, potentially leading to a sandbox escape.

Mitigation and Prevention

Here, we discuss steps to mitigate the risks associated with CVE-2021-38013 and prevent similar vulnerabilities in the future.

Immediate Steps to Take

Users are advised to update their Google Chrome browser to version 96.0.4664.45 or newer to mitigate the vulnerability. It is crucial to apply security patches promptly to ensure system safety.

Long-Term Security Practices

Implementing robust security practices, such as regularly updating software, deploying endpoint protection tools, and educating users on safe browsing habits, can enhance overall cybersecurity posture.

Patching and Updates

Regularly monitor security advisories from Google and apply patches and updates promptly to ensure that known vulnerabilities are addressed and system security is maintained.