CVE-2021-34773 : Security Advisory and Response

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), and Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P) could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack on an affected device. This could lead to unauthorized actions by an attacker with the privilege level of the targeted user, such as modifying device configurations and deleting user accounts.

Understanding CVE-2021-34773

This section will cover what the CVE-2021-34773 vulnerability entails, its impact, technical details, and mitigation strategies.

What is CVE-2021-34773?

CVE-2021-34773 is a vulnerability in the web-based management interface of Cisco Unified Communications Manager that could enable a remote attacker to perform CSRF attacks on the affected device.

The Impact of CVE-2021-34773

The vulnerability could allow unauthorized individuals to manipulate device configurations and delete user accounts by exploiting insufficient CSRF protections on the management interface.

Technical Details of CVE-2021-34773

This section will delve into the specific technical aspects of the CVE-2021-34773 vulnerability.

Vulnerability Description

The insufficient CSRF protections on the web-based management interface of Cisco Unified Communications Manager can be exploited by attackers to trick users into performing malicious actions.

Affected Systems and Versions

The vulnerability affects Cisco Unified Communications Manager, Cisco Unified Communications Manager Session Management Edition, and Cisco Unified Communications Manager IM & Presence Service.

Exploitation Mechanism

Attackers can exploit this vulnerability by persuading a user of the management interface to click on a malicious link, leading to unauthorized actions on the device.

Mitigation and Prevention

To protect systems from CVE-2021-34773, immediate steps should be taken, and long-term security practices need to be implemented.

Immediate Steps to Take

It is recommended to update the affected Cisco Unified Communications Manager products to the latest versions and apply any available patches to address the vulnerability.

Long-Term Security Practices

Implementing strong access controls and regular security audits can help prevent future CSRF attacks and protect the integrity of the systems.

Patching and Updates

Regularly check for updates and advisories from Cisco to ensure that systems are protected against known vulnerabilities.