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Category:   Device (Router/Bridge/Hub)  >   Brocade Switch Vendors:   Brocade Communications Systems
(Brocade Communications Systems Issues Fix for Brocade 5400 and 5600 vRouters) OpenSSH AES-GCM Memory Corruption Flaw Lets Remote Authenticated Users Bypass Access Controls
SecurityTracker Alert ID:  1035940
SecurityTracker URL:  http://securitytracker.com/id/1035940
CVE Reference:   CVE-2013-4548   (Links to External Site)
Date:  May 21 2016
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): Brocade 5400 and 5600 vRouters
Description:   A vulnerability was reported in OpenSSH. A remote authenticated user can bypass access control restrictions. Brocade 5400 and 5600 vRouters are affected.

A remote authenticated user can send specially crafted data to trigger a memory corruption flaw when an AES-GCM cipher is selected during key exchange to execute arbitrary code on the target system. The code will run with the privileges of the target user.

This can be exploited to bypass login shell restrictions.

Markus Friedl reported this vulnerability.

Impact:   A remote authenticated user can bypass access control restrictions.
Solution:   Brocade Communications Systems has issued a fix for CVE-2013-4548 for Brocade 5400 (6.7R12) and 5600 vRouters (4.2R1).

The Brocade Communications Systems advisory is available at:

http://www.brocade.com/content/dam/common/documents/content-types/security-bulletin/brocade-security-advisory-2016-006.pdf

Vendor URL:  www.brocade.com/content/dam/common/documents/content-types/security-bulletin/brocade-security-advisory-2016-006.pdf (Links to External Site)
Cause:   Access control error

Message History:   This archive entry is a follow-up to the message listed below.
Nov 8 2013 OpenSSH AES-GCM Memory Corruption Flaw Lets Remote Authenticated Users Bypass Access Controls



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