CVE-2021-21138 : Security Advisory and Response
Discover the impact of CVE-2021-21138, a vulnerability in Google Chrome before version 88.0.4324.96 that enabled local attackers to escape the sandbox and execute malicious actions.
A detailed overview of CVE-2021-21138 focusing on the vulnerability in Google Chrome prior to version 88.0.4324.96 that allowed a local attacker to potentially perform a sandbox escape.
Understanding CVE-2021-21138
This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-21138.
What is CVE-2021-21138?
The vulnerability in DevTools in Google Chrome before version 88.0.4324.96 enabled a local attacker to execute a sandbox escape through a specially crafted file.
The Impact of CVE-2021-21138
The vulnerability allowed an unauthorized local attacker to gain elevated privileges and escape the browser's sandbox environment, potentially leading to further malicious activities.
Technical Details of CVE-2021-21138
Explore the specifics of the vulnerability including its description, affected systems, and exploitation mechanism.
Vulnerability Description
The use after free issue in DevTools in Google Chrome allowed attackers to exploit memory corruption, leading to a sandbox escape via a malicious file.
Affected Systems and Versions
Google Chrome versions prior to 88.0.4324.96 were susceptible to this security flaw, potentially impacting users of unpatched systems.
Exploitation Mechanism
By leveraging the use after free vulnerability in DevTools, a local attacker could carefully craft a file to trigger the sandbox escape and execute arbitrary code.
Mitigation and Prevention
Learn how to address and prevent the exploitation of CVE-2021-21138 to enhance the security of your systems.
Immediate Steps to Take
Users are advised to update Google Chrome to version 88.0.4324.96 or later to mitigate the risk of exploitation and ensure protection against this vulnerability.
Long-Term Security Practices
Implementing robust security practices, such as regular software updates, security patches, and secure browsing habits, can help reduce the likelihood of future security breaches.
Patching and Updates
Continuously monitor security advisories from Google Chrome and apply recommended patches promptly to safeguard systems from known vulnerabilities.