CVE-2021-21514 : Exploit Details and Defense Strategies

Dell EMC OpenManage Server Administrator (OMSA) versions 9.5 and earlier are impacted by a path traversal vulnerability. This CVE was made public on March 1, 2021, and carries a CVSS base score of 4.9, ranking as a medium severity issue.

Understanding CVE-2021-21514

This section delves into the specifics of the CVE to provide a comprehensive insight into its implications.

What is CVE-2021-21514?

The CVE-2021-21514 pertains to Dell Open Manage Server Administrator versions 9.5 and below, posing a path traversal risk. This flaw could allow an unauthorized remote user to access arbitrary files on the target system by using a specially crafted URL request.

The Impact of CVE-2021-21514

The vulnerability's impact is categorized as medium severity, with a CVSS base score of 4.9. Although the availability impact is deemed as none, the confidentiality impact is high, potentially leading to unauthorized access to sensitive information.

Technical Details of CVE-2021-21514

This section outlines the technical aspects of the CVE for a better understanding of its nature.

Vulnerability Description

The vulnerability is centered around a path traversal weakness in Dell EMC OpenManage Server Administrator versions 9.5 and prior. This flaw could be exploited by a remote attacker with admin privileges to view unauthorized files on the target system.

Affected Systems and Versions

The affected product is the Dell Open Manage Server Administrator, specifically versions less than or equal to 9.5, exposing systems running these versions to the identified vulnerability.

Exploitation Mechanism

By sending a carefully crafted URL request, a malicious user with admin privileges could potentially exploit this vulnerability, gaining unauthorized access to files on the target system.

Mitigation and Prevention

To safeguard systems from the risks associated with CVE-2021-21514, immediate and long-term preventive measures are essential.

Immediate Steps to Take

It is recommended to update Dell EMC OpenManage Server Administrator to a patched version that addresses the path traversal vulnerability. Additionally, restrict the access privileges of users to minimize the impact of potential exploitation.

Long-Term Security Practices

Incorporate regular security assessments and updates into your system maintenance routine. Educate users on safe browsing habits and the importance of promptly applying security patches to mitigate future risks.

Patching and Updates

Stay informed about security advisories from Dell relevant to OpenManage Server Administrator to ensure timely application of patches and updates.