Learn about CVE-2021-21164, an insufficient data validation vulnerability in Chrome on iOS allowing attackers to leak cross-origin data. Find out the impact, technical details, affected systems, and mitigation steps.
An insufficient data validation vulnerability in Chrome on iOS allowed a remote attacker to leak cross-origin data via a crafted HTML page. Here is a detailed overview of CVE-2021-21164 and its implications.
Understanding CVE-2021-21164
CVE-2021-21164 is an insufficient data validation vulnerability in Chrome on iOS that could be exploited by a remote attacker to leak cross-origin data by manipulating HTML pages.
What is CVE-2021-21164?
CVE-2021-21164 is a security vulnerability in Google Chrome on iOS that existed prior to version 89.0.4389.72. It stems from insufficient data validation, enabling attackers to extract cross-origin data.
The Impact of CVE-2021-21164
The impact of this vulnerability is significant as it allows remote attackers to access sensitive cross-origin data through manipulated HTML pages. This breach can lead to unauthorized data leakage and potential privacy violations.
Technical Details of CVE-2021-21164
Here are specific technical aspects of the CVE-2021-21164 vulnerability.
Vulnerability Description
The vulnerability arises from insufficient data validation in Chrome on iOS, affecting versions prior to 89.0.4389.72. Attackers exploit this flaw to extract cross-origin data through maliciously crafted HTML pages.
Affected Systems and Versions
Google Chrome on iOS versions less than 89.0.4389.72 is vulnerable to this exploit. Users of these versions are at risk of having their cross-origin data leaked by remote attackers.
Exploitation Mechanism
Remote attackers can exploit this vulnerability by creating specially crafted HTML pages that, when accessed by a user using a vulnerable Chrome version, facilitate the leakage of cross-origin data.
Mitigation and Prevention
Protecting your systems from CVE-2021-21164 requires immediate action and long-term security measures.
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates
Stay informed about security advisories and updates from Google Chrome to promptly address any future vulnerabilities and ensure the ongoing protection of your systems.