CVE-2023-3489 : Exploit Details and Defense Strategies

This CVE-2023-3489 pertains to a security vulnerability identified in Brocade Fabric OS version 9.2.0. The issue arises from the

firmwaredownload

command, which could potentially expose FTP/SFTP/SCP server passwords in clear text within the SupportSave file when downgrading from Fabric OS v9.2.0 to an earlier version.

Understanding CVE-2023-3489

This section delves into the specifics of CVE-2023-3489, including the vulnerability description, impacts, technical details, and mitigation strategies.

What is CVE-2023-3489?

The CVE-2023-3489 vulnerability involves the logging of FTP/SFTP/SCP server passwords in clear text within the SupportSave file during a downgrade operation from Fabric OS v9.2.0 to an earlier version.

The Impact of CVE-2023-3489

The impact of this vulnerability is categorized as high severity with a CVSS v3.1 base score of 8.6. It poses a significant risk to confidentiality as it allows for the retrieval of sensitive data, aligning with CAPEC-37 (Retrieve Embedded Sensitive Data).

Technical Details of CVE-2023-3489

This section provides insights into the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The security flaw in Brocade Fabric OS v9.2.0 stems from the

firmwaredownload

command, potentially exposing server passwords in clear text within the SupportSave file during downgrades.

Affected Systems and Versions

The impacted system in this scenario is Brocade Fabric OS v9.2.0, specifically when downgrading to any earlier version of Fabric OS.

Exploitation Mechanism

The exploitation of this vulnerability occurs when executing the

firmwaredownload

command to perform a downgrade operation, leading to the storage of sensitive data in an insecure manner.

Mitigation and Prevention

To address CVE-2023-3489 and enhance system security, it is crucial to implement effective mitigation measures and preventive actions.

Immediate Steps to Take

Utilize the web interface or REST API instead of the vulnerable

firmwaredownload

command.
Alternatively, run the

firmwaredownload

command in interactive mode to reduce the risk of exposing sensitive data.

Long-Term Security Practices

Regularly monitor and update security protocols to address vulnerabilities promptly.
Educate personnel on secure data handling practices to prevent unauthorized access to sensitive information.

Patching and Updates

Stay informed about security advisories and patches released by Brocade to address CVE-2023-3489. Ensure timely application of updates to mitigate potential risks associated with the vulnerability.