IBM System Networking switches information disclosure

ibm-networking-cve20130570 (83166) The risk level is classified as LowLow Risk

Description:

A potential vulnerability has been identified in the FCoE feature in IBM System Networking switches and legacy Blade Network Technology (BNT) switches running IBM Networking Operating System (NOS) (formerly known as BLADE Operating System). If a switch receives a frame with an unknown destination MAC address, it will flood the frame out on all interfaces on the same VLAN. While this behavior is standard for Ethernet, it is not within spec for Fibre Channel over Ethernet. This vulnerability is not remotely exploitable and requires physical or local access to the network. A successful exploit requires that the attacker be eavesdropping on the broadcast domain (i.e., the VLAN). An exploit should not impact integrity of transmitted data or system availability, but it can compromise the confidentiality of information, although the attacker would not have control over what can be accessed.

*CVSS:

Base Score: 2.9
  Access Vector: Adjacent Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: None
  Availability Impact: None
 
Temporal Score: 2.1
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Obtain Information

Remedy:

Refer to IBM Security Bulletin T1019715 for patch, upgrade or suggested workaround information. See References.

References:

  • IBM Security Bulletin T1019715: IBM Switches flood Fibre Channel-over-Ethernet (FCoE) data frame out of every port if destination address is not in MAC table (CVE-2013-0570).
  • CVE-2013-0570: ** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.

Platforms Affected:

  • IBM Flex System Fabric CN4093 10Gb Converged Scalable Switch
  • IBM Flex System Fabric EN4093 10Gb Scalable Switch
  • IBM Flex System SI4093 Interconnect Module
  • IBM RackSwitch G8124/G8124-E/G8124-ER
  • IBM RackSwitch G8264
  • IBM RackSwitch G8264-T
  • IBM RackSwitch G8264CS
  • IBM RackSwitch G8316
  • IBM Virtual Fabric 10 Gb Ethernet Switch Module

Reported:

Jul 31, 2013

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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* 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.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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