CVE-2021-37959 : Exploit Details and Defense Strategies

This article provides an overview of CVE-2021-37959, a vulnerability found in Google Chrome prior to version 94.0.4606.54, allowing for potential exploitation by attackers.

Understanding CVE-2021-37959

CVE-2021-37959 is a 'Use after free' vulnerability identified in the Task Manager of Google Chrome before version 94.0.4606.54. This vulnerability could be exploited by attackers through a crafted HTML page, leading to heap corruption.

What is CVE-2021-37959?

The CVE-2021-37959 vulnerability refers to a scenario in Google Chrome where, prior to version 94.0.4606.54, an attacker could manipulate a user into performing specific gestures, potentially resulting in heap corruption using a specially crafted HTML page.

The Impact of CVE-2021-37959

This vulnerability could allow an attacker to execute arbitrary code on the targeted system, leading to potential information disclosure, data loss, or further compromise of the affected system.

Technical Details of CVE-2021-37959

CVE-2021-37959 involves a 'Use after free' scenario in Google Chrome's Task Manager, affecting versions before 94.0.4606.54. Here are some technical details:

Vulnerability Description

The vulnerability arises from improper handling of memory objects in the Task Manager, enabling an attacker to execute malicious code leading to heap corruption.

Affected Systems and Versions

Google Chrome versions prior to 94.0.4606.54 are susceptible to this vulnerability. Users are advised to update their Chrome browser to the latest version to mitigate the risk.

Exploitation Mechanism

Attackers can exploit this vulnerability by convincing users to interact with a malicious HTML page, triggering the 'Use after free' scenario in the Task Manager and potentially leading to heap corruption.

Mitigation and Prevention

To safeguard systems against CVE-2021-37959 and similar vulnerabilities, it is crucial to take immediate action and implement long-term security practices.

Immediate Steps to Take

Users are urged to update their Google Chrome browser to version 94.0.4606.54 or later to address the CVE-2021-37959 vulnerability.

Long-Term Security Practices

Incorporate regular security updates into your software maintenance routine, apply patches promptly, and educate users about safe browsing practices to enhance overall cybersecurity.

Patching and Updates

Stay informed about security advisories from vendors like Google, Fedora, and Debian, and promptly apply patches and updates to mitigate the risk of known vulnerabilities.