CVE-2021-1253 : Security Advisory and Response

Multiple vulnerabilities in the web-based management interface of Cisco Data Center Network Manager (DCNM) could allow a remote attacker with network-operator privileges to conduct a cross-site scripting (XSS) attack or a reflected file download (RFD) attack against a user of the interface.

Understanding CVE-2021-1253

This CVE identifies multiple vulnerabilities in Cisco Data Center Network Manager (DCNM) that could be exploited by a remote attacker with network-operator privileges.

What is CVE-2021-1253?

CVE-2021-1253 refers to a series of vulnerabilities in Cisco DCNM's web-based management interface that enables attackers to launch XSS and RFD attacks.

The Impact of CVE-2021-1253

These vulnerabilities could allow an unauthorized attacker to execute malicious code, steal sensitive information, or perform other harmful actions on an affected system.

Technical Details of CVE-2021-1253

The following are some technical details related to CVE-2021-1253:

Vulnerability Description

The vulnerabilities in the Cisco DCNM web-based management interface can lead to cross-site scripting (XSS) and reflected file download (RFD) attacks by exploiting network-operator privileges.

Affected Systems and Versions

The affected product is the Cisco Data Center Network Manager with versions that are affected by these vulnerabilities.

Exploitation Mechanism

A remote attacker with network-operator privileges can exploit the vulnerabilities in the web-based management interface to launch XSS and RFD attacks.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-1253, users and administrators can take the following steps:

Immediate Steps to Take

Apply the necessary security patches provided by Cisco to address the vulnerabilities.
Limit network access to the management interface to authorized users only.
Monitor and review network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch all software and applications to prevent potential vulnerabilities.
Conduct security training for users to raise awareness about phishing and social engineering attacks.

Patching and Updates

Stay informed about the latest security advisories from Cisco and promptly apply any patches or updates released to address known vulnerabilities.