CVE-2021-21541 Explained : Impact and Mitigation
Learn about CVE-2021-21541, a medium-severity DOM-based cross-site scripting vulnerability in Dell EMC iDRAC9 versions before 4.40.00.00. Understand the impact, exploitation, and mitigation steps.
A DOM-based cross-site scripting vulnerability in Dell EMC iDRAC9 versions prior to 4.40.00.00 could allow a remote attacker to execute malicious code in the context of the vulnerable web application.
Understanding CVE-2021-21541
This CVE references a vulnerability in Dell's Integrated Dell Remote Access Controller (iDRAC) that could be exploited by an attacker to perform cross-site scripting attacks.
What is CVE-2021-21541?
The CVE-2021-21541 vulnerability exists in iDRAC9 versions below 4.40.00.00, allowing an unauthenticated attacker to execute malicious HTML or JavaScript code in the victim's browser.
The Impact of CVE-2021-21541
The impact of this vulnerability is rated as medium severity with a CVSS base score of 6.1. It can lead to the execution of arbitrary code in the context of the affected web application.
Technical Details of CVE-2021-21541
This section covers the specifics of the vulnerability, affected systems, and how it can be exploited.
Vulnerability Description
The flaw in Dell EMC iDRAC9 versions prior to 4.40.00.00 allows attackers to inject malicious code into the browser, potentially compromising the security and integrity of the application.
Affected Systems and Versions
Integrated Dell Remote Access Controller (iDRAC) versions less than 4.40.00.00 are susceptible to this vulnerability.
Exploitation Mechanism
Remote unauthenticated attackers can exploit this vulnerability by luring application users into supplying malicious code that is then executed within the browser's environment.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-21541, users and administrators should take the following steps.
Immediate Steps to Take
- Update iDRAC9 to version 4.40.00.00 or later to patch the vulnerability.
- Be cautious while interacting with untrusted websites or following suspicious links.
Long-Term Security Practices
- Implement regular security training for users to recognize and avoid social engineering attacks.
- Monitor and analyze web traffic for any signs of malicious activity.
Patching and Updates
Stay informed about security bulletins from Dell and apply updates promptly to ensure the protection of your systems.