CVE-2021-21167 : Vulnerability Insights and Analysis
Learn about CVE-2021-21167, a 'Use after free' vulnerability in Google Chrome prior to 89.0.4389.72 that could allow heap corruption exploitation. Find out the impact, affected systems, and mitigation methods.
A detailed overview of CVE-2021-21167, a vulnerability in Google Chrome prior to version 89.0.4389.72 that could allow remote attackers to exploit heap corruption via a crafted HTML page.
Understanding CVE-2021-21167
This section delves into the specifics of the CVE-2021-21167 vulnerability in Google Chrome.
What is CVE-2021-21167?
CVE-2021-21167 is a 'Use after free' vulnerability in bookmarks in Google Chrome versions prior to 89.0.4389.72. It could enable a remote attacker to potentially exploit heap corruption through a maliciously crafted HTML page.
The Impact of CVE-2021-21167
The impact of this vulnerability includes the potential for remote attackers to cause heap corruption in affected Google Chrome browsers.
Technical Details of CVE-2021-21167
This section explores the technical aspects of CVE-2021-21167, including the vulnerability description, affected systems, and exploitation mechanism.
Vulnerability Description
The vulnerability arises from a 'Use after free' issue in bookmarks within Google Chrome versions prior to 89.0.4389.72, which could be abused by attackers to trigger heap corruption.
Affected Systems and Versions
Google Chrome versions less than 89.0.4389.72 are impacted by this vulnerability. Users with outdated Chrome installations are at risk.
Exploitation Mechanism
Remote attackers can exploit this vulnerability by enticing users to visit a specially crafted HTML page, triggering the 'Use after free' flaw and potentially leading to heap corruption.
Mitigation and Prevention
In this section, you will find essential steps to address and prevent exposure to CVE-2021-21167.
Immediate Steps to Take
Users are advised to update Google Chrome to version 89.0.4389.72 or newer to mitigate the risk associated with this vulnerability.
Long-Term Security Practices
Regularly updating browsers, practicing safe browsing habits, and staying informed about security patches are critical for maintaining cybersecurity hygiene.
Patching and Updates
Regularly check for and apply security updates released by Google Chrome to protect against known vulnerabilities.