Learn about CVE-2021-21135 affecting Google Chrome versions < 88.0.4324.96. Explore the impact, technical details, and mitigation strategies for this cross-origin data leakage vulnerability.
A detailed overview of CVE-2021-21135 that affected Google Chrome versions prior to 88.0.4324.96.
Understanding CVE-2021-21135
CVE-2021-21135 highlights an inappropriate implementation in Performance API within Google Chrome versions less than 88.0.4324.96, enabling a remote attacker to leak cross-origin data through a specifically designed HTML page.
What is CVE-2021-21135?
The vulnerability in CVE-2021-21135 stems from flawed Performance API implementation, allowing malicious actors to access cross-origin data by exploiting a targeted HTML page within affected Chrome versions.
The Impact of CVE-2021-21135
The impact of CVE-2021-21135 is significant as it could lead to unauthorized leakage of cross-origin data, posing a serious threat to user privacy and sensitive information when browsing the web using affected Google Chrome versions.
Technical Details of CVE-2021-21135
This section delves into the technical specifics of the CVE-2021-21135 vulnerability.
Vulnerability Description
The vulnerability arises from an inappropriate implementation of the Performance API in Google Chrome versions prior to 88.0.4324.96, which could be exploited by a remote attacker to access cross-origin data.
Affected Systems and Versions
Google Chrome versions below 88.0.4324.96 are impacted by CVE-2021-21135, necessitating immediate attention from users and system administrators to mitigate the risks associated with this vulnerability.
Exploitation Mechanism
The exploitation of CVE-2021-21135 involves the utilization of a maliciously crafted HTML page to extract cross-origin data from affected Google Chrome browsers.
Mitigation and Prevention
The following steps outline the mitigation and prevention strategies for CVE-2021-21135.
Immediate Steps to Take
Users and organizations are advised to update Google Chrome to versions beyond 88.0.4324.96 to safeguard against the exploitation of this vulnerability.
Long-Term Security Practices
Ensuring regular updates and security patches for web browsers is crucial for maintaining a secure browsing environment and protecting against potential threats like CVE-2021-21135.
Patching and Updates
Regularly applying security patches and staying informed about new vulnerabilities and their respective fixes is essential in preventing cyber attacks and maintaining a resilient security posture.