CVE-2021-21513 : Security Advisory and Response
Discover the details of CVE-2021-21513, an authentication bypass vulnerability in Dell EMC OpenManage Server Administrator version 9.5 for Windows. Learn about the impact, affected systems, and mitigation steps.
Dell EMC OpenManage Server Administrator (OMSA) version 9.5 for Microsoft Windows with Distributed Web Server (DWS) enabled is vulnerable to an authentication bypass issue. This could allow a remote attacker to gain admin access on the affected system.
Understanding CVE-2021-21513
This section will cover the details and impact of CVE-2021-21513.
What is CVE-2021-21513?
CVE-2021-21513 refers to an authentication bypass vulnerability in Dell EMC OpenManage Server Administrator (OMSA) version 9.5 with DWS enabled on Microsoft Windows systems. Attackers could exploit this flaw to achieve administrative privileges without authentication.
The Impact of CVE-2021-21513
The vulnerability poses a high severity risk with a CVSS base score of 8.6, allowing unauthorized access to critical system functions and data.
Technical Details of CVE-2021-21513
This section will delve into the technical aspects of the vulnerability.
Vulnerability Description
The issue stems from improper authentication implementation in OMSA version 9.5 with DWS enabled, enabling unauthenticated remote attackers to escalate privileges.
Affected Systems and Versions
Dell OpenManage Server Administrator version 9.5 specifically on Microsoft Windows installations with DWS enabled are impacted by this vulnerability.
Exploitation Mechanism
Remote, unauthenticated attackers can exploit this vulnerability by conducting targeted attacks on systems with the affected OMSA version.
Mitigation and Prevention
This section provides guidance on mitigating the risks associated with CVE-2021-21513.
Immediate Steps to Take
Users are advised to update OMSA to a non-vulnerable version, disable DWS if not required, and implement network security controls to restrict unauthorized access.
Long-Term Security Practices
Regularly monitor security advisories from Dell and apply security patches promptly to mitigate potential threats.
Patching and Updates
Dell has released security updates to address this vulnerability. Users should apply the necessary patches as soon as possible.