CVE-2021-21113 : Security Advisory and Response
Discover details about CVE-2021-21113, a heap buffer overflow vulnerability in Skia in Google Chrome, enabling remote attackers to exploit heap corruption via crafted HTML pages. Learn about the impact, affected systems, and mitigation steps.
A heap buffer overflow vulnerability was discovered in Skia in Google Chrome prior to version 87.0.4280.141, which could allow a remote attacker to exploit heap corruption through a specially crafted HTML page.
Understanding CVE-2021-21113
This section provides insights into the nature and impact of the CVE-2021-21113 vulnerability.
What is CVE-2021-21113?
The CVE-2021-21113 vulnerability is a heap buffer overflow in Google Chrome's Skia component that could be exploited by an attacker via a malicious HTML page.
The Impact of CVE-2021-21113
The impact of this vulnerability is significant as it allows a remote attacker to potentially execute arbitrary code or crash the application, leading to a denial of service or even remote code execution.
Technical Details of CVE-2021-21113
In this section, we will delve into the technical aspects of the CVE-2021-21113 vulnerability.
Vulnerability Description
The vulnerability arises from a heap buffer overflow in the Skia component of Google Chrome, enabling an attacker to trigger heap corruption through a crafted HTML page.
Affected Systems and Versions
Google Chrome versions prior to 87.0.4280.141 are affected by this vulnerability, highlighting the critical need for users to update to the latest version.
Exploitation Mechanism
The exploitation of CVE-2021-21113 involves enticing a user to visit a malicious website containing the specially crafted HTML page designed to trigger the heap buffer overflow.
Mitigation and Prevention
Here we discuss steps to mitigate and prevent the exploitation of CVE-2021-21113.
Immediate Steps to Take
Users are advised to update their Google Chrome browser to version 87.0.4280.141 or later to safeguard against this vulnerability. Additionally, exercising caution while browsing and avoiding suspicious websites can help reduce the risk of exploitation.
Long-Term Security Practices
Implementing security best practices such as regularly updating software, utilizing strong passwords, and employing security tools can enhance overall defense against such vulnerabilities.
Patching and Updates
Google has released a stable channel update addressing the CVE-2021-21113 vulnerability. Users are urged to apply the latest patches promptly to protect their systems from potential attacks.