CVE-2021-4231 Explained : Impact and Mitigation
Learn about CVE-2021-4231, a cross site scripting vulnerability in Angular up to versions 11.0.4/11.1.0-next.2. Find out the impact, technical details, and steps to mitigate the issue.
Angular Comment cross site scripting vulnerability up to version 11.0.4/11.1.0-next.2 allows remote attackers to execute cross site scripting attacks by manipulating comments. Upgrading to versions 11.0.5 and 11.1.0-next.3 is recommended to mitigate this issue.
Understanding CVE-2021-4231
This CVE identifies a security vulnerability in Angular affecting versions up to 11.0.4/11.1.0-next.2. The vulnerability is related to the handling of comments that can be exploited for cross site scripting attacks.
What is CVE-2021-4231?
CVE-2021-4231 is a vulnerability found in Angular versions up to 11.0.4/11.1.0-next.2. It allows remote attackers to conduct cross site scripting attacks through manipulation of comments.
The Impact of CVE-2021-4231
The vulnerability in Angular can result in cross site scripting attacks, enabling malicious actors to execute scripts in a victim's web browser. This could lead to the theft of sensitive information or unauthorized actions on behalf of the user.
Technical Details of CVE-2021-4231
This section provides detailed technical information about the CVE-2021-4231 vulnerability.
Vulnerability Description
The vulnerability in Angular arises from improper handling of comments, which can be exploited to inject malicious scripts for cross site scripting attacks.
Affected Systems and Versions
Angular versions 11.0.0 to 11.0.4 and 11.1.0-next.0 to 11.1.0-next.2 are affected by this vulnerability.
Exploitation Mechanism
Remote attackers are able to exploit this vulnerability by manipulating comments to inject and execute malicious scripts in the context of a user's browser.
Mitigation and Prevention
To address CVE-2021-4231, immediate actions must be taken to secure Angular installations.
Immediate Steps to Take
Upgrade affected Angular components to versions 11.0.5 and 11.1.0-next.3 to patch the vulnerability and prevent potential cross site scripting attacks.
Long-Term Security Practices
Implement secure coding practices and regular security audits to mitigate the risk of similar vulnerabilities in the future.
Patching and Updates
Stay informed about security updates and patches released by Angular to ensure timely mitigation of known vulnerabilities.