CVE-2021-1535 : What You Need to Know

A vulnerability in the cluster management interface of Cisco SD-WAN vManage Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system.

Understanding CVE-2021-1535

This CVE identifies a vulnerability in Cisco SD-WAN vManage Software that could lead to information disclosure.

What is CVE-2021-1535?

CVE-2021-1535 is a vulnerability in the cluster management interface of Cisco SD-WAN vManage Software that enables an unauthenticated attacker to access sensitive data on a targeted system.

The Impact of CVE-2021-1535

The vulnerability could result in unauthorized access to sensitive information stored on the affected system, potentially leading to a breach of confidentiality.

Technical Details of CVE-2021-1535

The following technical details outline the specifics of CVE-2021-1535.

Vulnerability Description

The absence of proper authentication in the cluster management interface of Cisco SD-WAN vManage Software allows attackers to view sensitive data by sending crafted requests to the affected system.

Affected Systems and Versions

The Cisco SD-WAN vManage Software is affected when operating in cluster mode. All versions of the software are susceptible to this vulnerability.

Exploitation Mechanism

Attackers exploit this vulnerability by sending specially crafted requests to the cluster management interface of the affected system, enabling them to access sensitive information.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-1535, consider the following measures.

Immediate Steps to Take

Ensure that the Cisco SD-WAN vManage Software is not exposed to unauthorized access from external entities.
Monitor network traffic for any suspicious activities that could indicate an exploitation attempt.

Long-Term Security Practices

Implement strict access controls and authentication mechanisms to prevent unauthorized access to sensitive interfaces.
Regularly update the software to patch known vulnerabilities and enhance security measures.

Patching and Updates

Cisco may release patches or updates to address CVE-2021-1535. Stay informed about security advisories from Cisco and apply relevant patches promptly to secure your systems.