CVE-2021-1133 : Security Advisory and Response

Cisco Data Center Network Manager REST API Vulnerabilities were discovered in January 2021, exposing multiple weaknesses in the REST API endpoint of Cisco's DCNM. This CVE allows authenticated remote attackers to manipulate data without proper authorization.

Understanding CVE-2021-1133

This section details the impact, technical aspects, and mitigation strategies related to the Cisco Data Center Network Manager REST API Vulnerabilities.

What is CVE-2021-1133?

The CVE-2021-1133 refers to multiple vulnerabilities found in the REST API endpoint of Cisco Data Center Network Manager (DCNM). These vulnerabilities could be exploited by authenticated remote attackers to view, modify, and delete data without the required authorization.

The Impact of CVE-2021-1133

The impact of these vulnerabilities is rated with a CVSS base score of 4.6, indicating a medium severity level. While the attack complexity is low, an attacker could potentially compromise the confidentiality and integrity of the system, although no availability impact has been reported.

Technical Details of CVE-2021-1133

This section delves into the vulnerability description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The vulnerabilities in the REST API endpoint of Cisco DCNM allow attackers to access and manipulate data unauthorizedly, posing a risk to the confidentiality and integrity of the system.

Affected Systems and Versions

The affected product is the Cisco Data Center Network Manager, and all versions are susceptible to these vulnerabilities.

Exploitation Mechanism

To exploit these vulnerabilities, an attacker needs to be authenticated and can perform actions such as viewing, modifying, and deleting data without proper authorization.

Mitigation and Prevention

To secure your systems, immediate steps should be taken along with long-term security practices and patching measures.

Immediate Steps to Take

Ensure proper authentication mechanisms, monitor and restrict API access, and apply the latest security updates provided by Cisco.

Long-Term Security Practices

Regular security audits, employee training, and network segmentation can enhance the overall security posture against such vulnerabilities.

Patching and Updates

Stay updated with security advisories from Cisco and promptly apply any patches or fixes released to address these vulnerabilities.