Security Bulletin: A vulnerability has been identified in IBM Spectrum Scale which is packaged in IBM ESS (CVE-2020-4926)

Summary

A security vulnerability has been identified in all levels of IBM Spectrum Scale which is packaged in IBM ESS where an unauthorized user can send arbitrary data to the CLI commands and daemon. A fix for this vulnerability is available.

Vulnerability Details

CVEID:CVE-2020-4926
**DESCRIPTION:**A vulnerability in the Spectrum Scale core component could allow unauthorized access to user data or injection of arbitrary data in the communication protocol.
CVSS Base score: 5.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/191600 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N)

Affected Products and Versions

Remediation/Fixes

For IBM ESS levels lower than V6.1.3, apply V6.1.3 or later available from FixCentral at:

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Elastic+Storage+Server+(ESS)&release=6.1.0&platform=All&function=all

In addition to applying the recommended code level, ensure that the tscCmdAllowRemoteConnections configuration parameter is set to ‘no’, which requires a cluster minimum release level of 5.1.3 or later. Setting**tscCmdAllowRemoteConnections **to ‘no’ in a multi-cluster setting must be done after ensuring that the remote clusters are running Spectrum Scale v5.1.3 or later

See <<mmchconfig command>> for more details - <https://www.ibm.com/docs/en/spectrum-scale/5.1.3?topic=reference-mmchconfig-command&gt;

Note : Systems running supported version should be upgraded to the current release containing the security fixes.

Workarounds and Mitigations

None