CVE-2021-1135 : What You Need to Know

Multiple vulnerabilities in the REST API endpoint of Cisco Data Center Network Manager (DCNM) could allow an authenticated, remote attacker to view, modify, and delete data without proper authorization.

Understanding CVE-2021-1135

Cisco Data Center Network Manager REST API Vulnerabilities

What is CVE-2021-1135?

The CVE-2021-1135 vulnerability refers to multiple security issues in the REST API endpoint of Cisco Data Center Network Manager (DCNM). These vulnerabilities could be exploited by an authenticated remote attacker to gain unauthorized access and manipulate data.

The Impact of CVE-2021-1135

With a CVSS base score of 4.6 (Medium Severity), this vulnerability could lead to unauthorized data viewing, modification, and deletion by attackers, posing a risk to the confidentiality and integrity of affected systems.

Technical Details of CVE-2021-1135

Vulnerability Description

The vulnerabilities in the REST API endpoint of Cisco DCNM allow attackers to carry out unauthorized operations including viewing, modifying, and deleting data without the necessary permissions.

Affected Systems and Versions

The affected product is Cisco Data Center Network Manager with all versions being susceptible to these vulnerabilities.

Exploitation Mechanism

An authenticated remote attacker can exploit these vulnerabilities to bypass authorization mechanisms and perform malicious actions on the targeted systems.

Mitigation and Prevention

Immediate Steps to Take

Cisco recommends users to apply the necessary security updates and patches provided by the vendor to mitigate the risk associated with these vulnerabilities.
Ensure proper access controls, authentication mechanisms, and authorization policies are in place to limit the impact of potential attacks.

Long-Term Security Practices

Regularly monitor security advisories and updates from Cisco to stay informed about potential threats and vulnerabilities.
Conduct comprehensive security assessments and audits to identify and address security gaps within the network infrastructure.

Patching and Updates

Users are advised to immediately apply the patches released by Cisco to address the vulnerabilities in Cisco Data Center Network Manager (DCNM) and prevent any potential exploitation.