BSA-2017-220

Brocade Security Advisory ID

BSA-2017-220

Initial Publication Date

03/31/2017

Last Updated

03/31/2017

Revision

1.0: Interim

Risk Impact

Low

Workaround

N/A

Component

ntp

Affected CVE

CVE-2016-7427

CVSS Score

3.0

Summary

The broadcast mode of NTP is expected to only be used in a trusted network. If the broadcast network is accessible to an attacker, a potentially exploitable denial of service vulnerability in ntpd's broadcast mode replay prevention functionality can be abused. An attacker with access to the NTP broadcast domain can periodically inject specially crafted broadcast mode NTP packets into the broadcast domain which, while being logged by, can cause to reject broadcast mode packets from legitimate NTP broadcast servers.

Affected Products

Product Current Assessment
Brocade 5400 vRouter Impacted: Fixed in 6.7R12.
Brocade 5600 vRouter Impacted: Fixed in 5.2R1.

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 Services Director, Brocade SLX-OS, Brocade Virtual ADX, Brocade Virtual Traffic Manager: Software, 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 March 31, 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.