CVE-2021-21576 Explained : Impact and Mitigation
Learn about CVE-2021-21576, a medium-severity DOM-based cross-site scripting vulnerability in Dell EMC iDRAC9 versions < 4.40.40.00, allowing remote attackers to run malicious scripts in victims' browsers.
Dell EMC iDRAC9 versions prior to 4.40.40.00 have a DOM-based cross-site scripting vulnerability, allowing remote attackers to execute malicious code in a victim's browser through a specially crafted link.
Understanding CVE-2021-21576
This CVE refers to a security flaw in Integrated Dell Remote Access Controller (iDRAC) devices that can be exploited by attackers to perform cross-site scripting attacks.
What is CVE-2021-21576?
CVE-2021-21576 is a vulnerability found in Dell's iDRAC9 versions below 4.40.40.00. It enables remote threat actors to inject and run malicious scripts on a user's web browser by convincing them to click on a compromised link.
The Impact of CVE-2021-21576
The impact of this vulnerability is rated as medium, with a CVSS base score of 6.1. Attackers can potentially compromise the integrity and confidentiality of affected systems, exposing them to various risks.
Technical Details of CVE-2021-21576
This section will delve into the specifics of the vulnerability, the affected systems, and how attackers can exploit it.
Vulnerability Description
The vulnerability in Dell's iDRAC9 versions prior to 4.40.40.00 allows for DOM-based cross-site scripting attacks, posing a security risk to users who interact with malicious links.
Affected Systems and Versions
Integrated Dell Remote Access Controller (iDRAC) devices running versions lower than 4.40.40.00 are susceptible to this cross-site scripting vulnerability.
Exploitation Mechanism
Remote threat actors can execute malicious HTML or JavaScript code in a victim's browser by luring them into visiting a specially crafted link.
Mitigation and Prevention
To secure systems against CVE-2021-21576 and similar threats, immediate actions and long-term security practices are advised.
Immediate Steps to Take
Organizations and users should update their iDRAC9 firmware to version 4.40.40.00 or newer to mitigate the risk of exploitation.
Long-Term Security Practices
Implement strict security measures, educate users on the risks of clicking on unknown links, and regularly update all software and firmware to stay protected.
Patching and Updates
Regularly check for security patches and updates from Dell to address vulnerabilities, ensuring the ongoing security of IT infrastructure.