CVE-2021-36284 : Exploit Details and Defense Strategies
Learn about CVE-2021-36284, an Improper Restriction of Excessive Authentication Attempts vulnerability in Dell BIOS, allowing a local authenticated administrator to bypass mitigations.
This article provides details about CVE-2021-36284, a vulnerability found in Dell BIOS that could allow a local authenticated malicious administrator to bypass excessive admin password attempt mitigations.
Understanding CVE-2021-36284
This section delves into the specific details of the CVE-2021-36284 vulnerability in Dell BIOS.
What is CVE-2021-36284?
CVE-2021-36284 is an Improper Restriction of Excessive Authentication Attempts vulnerability in Dell BIOS. It enables a local authenticated malicious administrator to bypass admin password attempt mitigations, potentially leading to a brute force attack.
The Impact of CVE-2021-36284
The vulnerability has a CVSS base score of 5.7, with a medium severity rating. An attacker with high privileges can exploit the flaw locally, affecting confidentiality, integrity, and availability of affected systems.
Technical Details of CVE-2021-36284
This section explores the technical aspects of the CVE-2021-36284 vulnerability in Dell BIOS.
Vulnerability Description
The vulnerability allows a local authenticated attacker to bypass excessive admin password attempt mitigations, facilitating a brute force attack on the system.
Affected Systems and Versions
The affected product is CPG BIOS from Dell with versions less than 1.7.0. Systems running this version are vulnerable to exploitation.
Exploitation Mechanism
A local authenticated malicious administrator can exploit this vulnerability to carry out a brute force attack by bypassing admin password attempt mitigations.
Mitigation and Prevention
This section covers the steps to mitigate and prevent exploits related to CVE-2021-36284 in Dell BIOS.
Immediate Steps to Take
Users are advised to update Dell BIOS to version 1.7.0 or above to eliminate the vulnerability and enhance system security.
Long-Term Security Practices
Implementing strong password policies, regular system updates, and monitoring for unauthorized access can improve overall system security.
Patching and Updates
Regularly check for security updates from Dell and apply patches promptly to prevent exploitation of known vulnerabilities.