Security Bulletin: Vulnerabilities in NTP affect IBM Flex System FC3171 8Gb SAN Switch and SAN Pass-thru, QLogic 8Gb Intelligent Pass-thru Module & SAN Switch Module for BladeCenter and QLogic Virtual Fabric Extension Module for IBM BladeCenter

Summary

IBM Flex System FC3171 8Gb SAN Switch and SAN Pass-thru, QLogic 8Gb Intelligent Pass-thru Module & SAN Switch Module for BladeCenter and QLogic Virtual Fabric Extension Module for IBM BladeCenter have addressed the applicable CVEs in NTP.

Vulnerability Details

Summary

IBM Flex System FC3171 8Gb SAN Switch and SAN Pass-thru, QLogic 8Gb Intelligent Pass-thru Module & SAN Switch Module for BladeCenter and QLogic Virtual Fabric Extension Module for IBM BladeCenter have addressed the applicable CVEs in NTP.

Vulnerability Details

CVEID: CVE-2016-7429

Description: NTP is vulnerable to a denial of service, caused by an attack on interface selection. By sending specially crafted packets with spoofed source address, a physical attacker could exploit this vulnerability to cause a denial of service.

CVSS Base Score: 1.6
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/119093&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L)
CVE-2016-7429 applies only to IBM Flex System FC3171 8Gb SAN Switch and SAN Pass-thru Firmware.

CVEID: CVE-2016-7431

Description: NTP could allow a remote attacker to bypass security restrictions, caused by the improper handling of Zero origin timestamp checks. An attacker could exploit this vulnerability to launch further attacks on the system.

CVSS Base Score: 5.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/119091&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID: CVE-2016-7433

Description: NTP is vulnerable to a denial of service, caused by the inclusion of the root delay allowing for an incorrect root distance calculation. An attacker could exploit this vulnerability to cause a denial of service.

CVSS Base Score: 1.6
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/119095&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:P/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L)

Affected products and versions

Remediation/Fixes

Firmware fix versions are available on Fix Central: <http://www.ibm.com/support/fixcentral/&gt;

Workarounds and Mitigations

None.

References

• Complete CVSS V3 Guide
• On-line Calculator V3

Related Information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Lenovo Product Security Advisories

Acknowledgement

None.

Change History
25 May, 2017: Original Version Published

• The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an “industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response.” IBM PROVIDES THE CVSS SCORES “AS IS” WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.