CVE-2021-21549 : Exploit Details and Defense Strategies

Dell EMC XtremIO Versions prior to 6.3.3-8 have been found to contain a Cross-Site Request Forgery (CSRF) Vulnerability in XMS. This vulnerability could be exploited by a non-privileged attacker, potentially allowing them to manipulate state-changing requests to the application, resulting in unintended server operations.

Understanding CVE-2021-21549

This section will provide an in-depth understanding of the CVE-2021-21549 vulnerability.

What is CVE-2021-21549?

CVE-2021-21549 is a Cross-Site Request Forgery (CSRF) vulnerability found in Dell EMC XtremIO Versions prior to 6.3.3-8. It allows non-privileged attackers to trick privileged users into unintentionally performing actions on the vulnerable application.

The Impact of CVE-2021-21549

The impact of CVE-2021-21549 is rated as high, with a base score of 8.8. This vulnerability has a high severity level, affecting confidentiality, integrity, and availability of the vulnerable systems.

Technical Details of CVE-2021-21549

In this section, we will delve into the technical aspects of the CVE-2021-21549 vulnerability.

Vulnerability Description

The CSRF vulnerability in Dell EMC XtremIO allows attackers to forge requests on behalf of users, potentially leading to unauthorized operations carried out by privileged users.

Affected Systems and Versions

Dell EMC XtremIO Versions prior to 6.3.3-8 are affected by this vulnerability. Users with versions below this are at risk of exploitation.

Exploitation Mechanism

Attackers can exploit this vulnerability by tricking privileged users to perform actions on the vulnerable application, which can result in unauthorized operations on the server.

Mitigation and Prevention

This section focuses on steps to mitigate and prevent the exploitation of CVE-2021-21549.

Immediate Steps to Take

Users are advised to update their Dell EMC XtremIO systems to version 6.3.3-8 or higher to eliminate the CSRF vulnerability.

Long-Term Security Practices

Implementing strict access controls, user input validation, and security monitoring can enhance the overall security posture of the system.

Patching and Updates

Regularly applying security patches and updates provided by Dell is crucial to ensuring the system is protected from known vulnerabilities.