BSA-2017-339

Brocade Security Advisory ID

BSA-2017-339

Initial Publication Date

06/23/2017

Last Updated

09/08/2017

Revision

2.0: Interim

Risk Impact

Medium

Workaround

N/A

Component

OpenVPN

Affected CVE

CVE-2017-7479

CVSS Score

6.5

Summary

An authenticated client can cause the server's the packet-id counter to roll over, which would lead the server process to hit an ASSERT() and stop running. To make the server hit the ASSERT(), the client must first cause the server to send it 2EXP32 packets (at least 196GB). OpenVPN versions 2.4.2 and 2.3.15 (and later) include these fixes.

Affected Products

Brocade is investigating its product lines to determine which products may be affected by this vulnerability and the impact on each affected product.

Products Confirmed Not Vulnerable

Brocade Fabric OS, Brocade FastIron OS, Brocade NetIron OS, Brocade Network OS, Brocade ServerIron ADX, Brocade Services Director, Brocade SLX-OS, Brocade Virtual ADX, Brocade Virtual Traffic Manager, and Brocade Virtual Web Application Firewall are confirmed not affected by this vulnerability.

Workaround

There are no workarounds that address this vulnerability.


Revision History

Version Change Date
1.0 Initial Publication June 23, 2017
2.0 Updated to address NOS September 8, 2017

Disclaimer

THIS DOCUMENT IS PROVIDED ON AN AS-IS BASIS SOLELY FOR INFORMATIONAL PURPOSES AND DOES NOT IMPLY ANY KIND OF GUARANTY OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. YOUR USE OF THE INFORMATION CONTAINED HEREIN IS AT YOUR OWN RISK. ALL INFORMATION PROVIDED HEREIN IS BASED ON BROCADE'S CURRENT KNOWLEDGE AND UNDERSTANDING OF THE VULNERABILITY AND IMPACT TO BROCADE HARDWARE AND SOFTWARE PRODUCTS. BROCADE RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.