BSA-2017-255

Brocade Fabric OS

2 more products

21653

21 March 2019

02 May 2017

Closed

Medium

7.8

Yes

CVE-2015-5600

Summary

Security Advisory ID : BSA-2017-255

Component : OpenSSH

Revision : 2.0: Final

The kbdint_next_device function in auth2-chall.c in sshd in OpenSSH through 6.9 does not properly restrict the processing of keyboard-interactive devices within a single connection, which makes it easier for remote attackers to conduct brute-force attacks or cause a denial of service (CPU consumption) via a long and duplicative list in the ssh -oKbdInteractiveDevices option, as demonstrated by a modified client that provides a different password for each pam element on this list.

Affected Products
Brocade Fabric OS - Impacted : Fixed in v7.4.2, v7.4.1d, v8.1.0 and later releases.

Products Confirmed Not Vulnerable
Brocade Network Advisor, Brocade SANnav

Workaround
Limit access to management interface using firewall and/or ipfilter.

Revision History

Version Change Date
1.0 Initial Publication May 2, 2017
2.0 Updated Fabric OS  version and to reflect Brocade Fibre Channel Products only.
Risk Impact updated to Medium
March 21, 2019