JSON Web Token (JWT) Exposure in Log Files

Brocade ASC-Gateway OVA

1 more products

35951

15 July 2025

15 July 2025

OPEN

HIGH

7.1 High -- CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVE-2025-6391

Brocade Security Advisory ID

BSA-2025-3061

Component

JSON Web Token

 

 

CWE-532: Insertion of Sensitive Information into Log File.

Summary

Brocade ASCG before 3.3.0 logs JSON Web Tokens (JWT) in log files. An attacker with access to the log files  can withdraw the unencrypted tokens with security implications, such as unauthorized access, session hijacking, and information disclosure. 

Note: The vulnerability affects both Brocade ASCG base OS (OVA deployment) and Brocade ASCG standard deployments

Products Affected

Brocade ASCG versions before 3.3.0

Products Confirmed Not Affected

  • Brocade Fabric OS - [VEX Justification: Component_not_present]

  • Brocade SANnav - [VEX Justification: Component_not_present]

Solution

  • Security update provided in Brocade ASCG 3.3.0

Credit

The issue was found during internal security testing

 

Revision History

Version

Change

Date

1.0

Initial Publication

Jul 15, 2025

 

Disclaimer

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