CVE-2021-27792 : Vulnerability Insights and Analysis

A vulnerability, assigned CVE-2021-27792, has been identified in Brocade Fabric OS versions before v9.0.1a, v8.2.3a, and v7.4.2h. The vulnerability lies in the handling of malformed user input in the web management interface, leading to a service crash.

Understanding CVE-2021-27792

This section delves into the details of the identified vulnerability in Brocade Fabric OS.

What is CVE-2021-27792?

The vulnerability arises from the flawed processing of user input within the web management interface of Brocade Fabric OS versions pre-v9.0.1a, v8.2.3a, and v7.4.2h. This improper handling of input could be exploited by an authenticated attacker to crash the FOS HTTP application handler, necessitating a system reboot.

The Impact of CVE-2021-27792

The impact of this vulnerability is significant as it allows an attacker to disrupt the service by causing a system crash, potentially leading to denial of service conditions.

Technical Details of CVE-2021-27792

Explore the technical aspects of the CVE-2021-27792 vulnerability affecting Brocade Fabric OS.

Vulnerability Description

The flaw in the request handling functions of the web management interface allows an authenticated attacker to trigger a service crash through malformed input, rendering the system unstable.

Affected Systems and Versions

Brocade Fabric OS versions prior to v9.0.1a, v8.2.3a, and v7.4.2h are impacted by this vulnerability, exposing systems utilizing these versions to the risk of a system crash.

Exploitation Mechanism

An attacker with authenticated access can exploit this weakness by providing malformed user input via the web management interface, causing the FOS HTTP application handler to crash.

Mitigation and Prevention

Learn about the recommended steps to mitigate and prevent exploitation of CVE-2021-27792 on systems running affected versions of Brocade Fabric OS.

Immediate Steps to Take

System administrators should apply security updates and patches provided by Brocade to remediate the vulnerability. Additionally, restricting access to the web management interface can limit the attack surface.

Long-Term Security Practices

Regular security audits and monitoring for abnormal system behavior can help detect potential vulnerabilities and unauthorized access attempts.

Patching and Updates

Stay informed about security advisories from Brocade and promptly apply patches to secure the system against known vulnerabilities.