Security Bulletin: A vulnerability has been identified in IBM Spectrum Scale where an unauthorized user can send arbitrary data to the CLI commands and daemon (CVE-2020-4926)

Summary

A security vulnerability has been identified in all levels of IBM Spectrum Scale 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 Spectrum Scale levels lower than V5.1.3, apply V5.1.3 or later available from FixCentral at:

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&release=5.1.3&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