CVE-2021-30564 : Exploit Details and Defense Strategies

A heap buffer overflow vulnerability was discovered in WebXR in Google Chrome before version 91.0.4472.164. This vulnerability could be exploited by a remote attacker via a specially crafted HTML page.

Understanding CVE-2021-30564

This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-30564.

What is CVE-2021-30564?

The CVE-2021-30564 is a heap buffer overflow vulnerability in WebXR in Google Chrome versions before 91.0.4472.164. It allowed a remote attacker to potentially exploit heap corruption through a maliciously created HTML page.

The Impact of CVE-2021-30564

The vulnerability could allow the attacker to trigger a heap buffer overflow, potentially leading to remote code execution or crashes of the Chrome browser. By exploiting this flaw, an attacker could gain control over affected systems and compromise user data.

Technical Details of CVE-2021-30564

This section dives into the specific technical aspects of the vulnerability.

Vulnerability Description

The vulnerability in WebXR in Google Chrome enabled a heap buffer overflow, which could be triggered by a crafted HTML page sent by a remote attacker.

Affected Systems and Versions

Google Chrome versions prior to 91.0.4472.164 are affected by this vulnerability.

Exploitation Mechanism

A remote attacker could exploit this vulnerability by enticing a user to visit a malicious website containing the specially crafted HTML page to trigger the heap buffer overflow.

Mitigation and Prevention

Below are the strategies to mitigate the risks associated with CVE-2021-30564.

Immediate Steps to Take

Users are advised to update Google Chrome to version 91.0.4472.164 or later to patch the vulnerability and prevent potential exploitation.

Long-Term Security Practices

Ensure timely installation of security updates for Google Chrome and regularly monitor security advisories from Google for any emerging vulnerabilities.

Patching and Updates

Apply security patches and updates released by Google promptly to protect systems from known security risks.