CVE-2021-21544 : Exploit Details and Defense Strategies
Learn about CVE-2021-21544, an authentication vulnerability in Dell EMC iDRAC9 versions prior to 4.40.00.00, allowing manipulation of username fields by remote attackers. Find mitigation steps here.
Dell EMC iDRAC9 versions prior to 4.40.00.00 have been found to contain an improper authentication vulnerability. This could be exploited by a remote authenticated malicious user with high privileges to manipulate the username field under the comment section.
Understanding CVE-2021-21544
This section delves into the details of the CVE-2021-21544 vulnerability.
What is CVE-2021-21544?
CVE-2021-21544 is an authentication vulnerability found in Dell EMC iDRAC9 versions earlier than 4.40.00.00, allowing potential manipulation of the username field by a remote authenticated malicious user with high privileges.
The Impact of CVE-2021-21544
The impact of this vulnerability is rated as low in severity. Although an attacker with high privileges could exploit the flaw, the base score is 2.7, indicating a low base severity.
Technical Details of CVE-2021-21544
Let's dive deeper into the technical aspects of CVE-2021-21544.
Vulnerability Description
The vulnerability stems from improper authentication within the iDRAC software, enabling a remote authenticated attacker to alter the username field under the comment section.
Affected Systems and Versions
The affected product is the Integrated Dell Remote Access Controller (iDRAC) by Dell. Specifically, versions prior to 4.40.00.00 are vulnerable to this security issue.
Exploitation Mechanism
A remote authenticated malicious user with elevated privileges can leverage this vulnerability to modify the username field within the comment section, potentially assigning it to any user.
Mitigation and Prevention
Understanding how to mitigate and prevent CVE-2021-21544 is crucial for maintaining system security.
Immediate Steps to Take
Users are advised to update their Dell EMC iDRAC9 software to version 4.40.00.00 or higher to eliminate this vulnerability. Additionally, monitor user accounts and restrict high privileges where possible.
Long-Term Security Practices
In the long term, organizations should regularly update their software and firmware, employ strong authentication mechanisms, and conduct security audits to ensure the integrity of their systems.
Patching and Updates
Stay informed about security updates from Dell by visiting the provided reference link: Dell Security Update.