Brocade Fabric OS

2 more products


31 March 2017

31 March 2017







Security Advisory ID : BSA-2017-227

Component : ntp

Revision : 1.0: Interim

Bug 2085 described a condition where the root delay was included twice, causing the jitter value to be higher than expected. Due to a misinterpretation of a small-print variable in The Book, the fix for this problem was incorrect, resulting in a root distance that did not include the peer dispersion. The calculations and formulae have been reviewed and reconciled, and the code has been updated accordingly.

Affected Products

Product Current Assessment
Brocade 5400 vRouter Impacted: Fixed in 6.7R12.
Brocade 5600 vRouter Impacted: Fixed in 5.2R1.
Brocade Services Director Impacted: Fixed in 17.1 and later.

Products Confirmed Not Vulnerable

Brocade Fabric OS, Brocade FastIron OS, Brocade NetIron OS, Brocade Network Advisor, Brocade Network OS, Brocade SDN Controller, Brocade ServerIron ADX, Brocade SLX-OS, Brocade Virtual ADX, BrocadeVirtual Traffic Manager: Software, and Brocade Virtual Web Application Firewall are confirmed not affected by this vulnerability.


There are no workarounds that address this vulnerability.

Revision History

Version Change Date
1.0 Initial Publication August 25, 2017
1.0 Initial Publication March 31, 2017