CVE-2021-21149 : Exploit Details and Defense Strategies
Learn about CVE-2021-21149, a stack buffer overflow vulnerability in Google Chrome on Linux allowing remote attackers to trigger out-of-bounds memory access.
A stack buffer overflow vulnerability in Google Chrome on Linux before version 88.0.4324.182 could allow a remote attacker to trigger out-of-bounds memory access by enticing users to visit a specially crafted HTML page.
Understanding CVE-2021-21149
This section delves into the specifics of the CVE-2021-21149 vulnerability.
What is CVE-2021-21149?
The CVE-2021-21149 vulnerability is a stack buffer overflow issue in Google Chrome on Linux systems prior to version 88.0.4324.182. It enables a remote attacker to exploit the flaw via a maliciously created HTML page.
The Impact of CVE-2021-21149
The impact of this vulnerability is significant as it allows attackers to execute arbitrary code or cause a denial of service (DoS) condition on the targeted system.
Technical Details of CVE-2021-21149
Providing detailed technical information about the specific aspects of CVE-2021-21149.
Vulnerability Description
The vulnerability results from a stack buffer overflow in the Data Transfer component of Google Chrome. This flaw allows a remote attacker to gain unauthorized access to sensitive information or execute arbitrary code.
Affected Systems and Versions
Google Chrome versions earlier than 88.0.4324.182 on Linux operating systems are vulnerable to this security issue.
Exploitation Mechanism
By crafting a malicious HTML page, remote attackers can exploit this vulnerability to perform out-of-bounds memory access on the target system.
Mitigation and Prevention
Exploring the steps to mitigate and prevent the CVE-2021-21149 vulnerability.
Immediate Steps to Take
Users are advised to update their Google Chrome browser to version 88.0.4324.182 or later to address this vulnerability. Additionally, exercise caution while browsing untrusted websites.
Long-Term Security Practices
Implementing secure browsing habits, such as avoiding suspicious links and downloads, can help reduce the risk of falling victim to similar exploits in the future.
Patching and Updates
Regularly check for and apply security updates for Google Chrome to ensure that known vulnerabilities are promptly addressed.