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Security Bulletin: Vulnerability in NX-OS Firmware used by IBM c-type SAN directors and switches.

Security Bulletin


Public disclosed OpenSSL vulnerability in NX-OS Firmware used by IBM c-type SAN directors and switches.

Vulnerability Details

CVEID:   CVE-2020-1968
DESCRIPTION:   OpenSSL could allow a remote attacker to obtain sensitive information, caused by a Raccoon attack in the TLS specification. By computing the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite, an attacker could exploit this vulnerability to eavesdrop on all encrypted communications sent over that TLS connection.
CVSS Base score: 3.7
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

Affected Product(s)Version(s)
NX-OSNX-OS prior to 8.4(2b)




Workarounds and Mitigations


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Change History

24 Feb 2021: Initial Publication

*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.


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.

Document Location


[{"Business Unit":{"code":"BU010","label":"Systems - Storage"},"Product":{"code":"SGMV02","label":"Cisco Software"},"Component":"Cisco DCNM","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"DCNM 11","Edition":""},{"Business Unit":{"code":"BU010","label":"Systems - Storage"},"Product":{"code":"SGMV01","label":"Cisco Hardware"},"Component":"","Platform":[{"code":"PF009","label":"Firmware"}],"Version":"NX-OS","Edition":""}]

Document Information

Modified date:
24 February 2021