Security Bulletin: A vulnerability in IBM Spectrum Scale packaged in IBM Elastic Storage System could cause a denial of service (CVE-2020-4756)

Summary

A security vulnerability has been identified in all levels of IBM Elastic Storage System that could allow a local attacker to cause a denial of service. A fix for this vulnerability is available.

Vulnerability Details

CVEID:CVE-2020-4756
**DESCRIPTION:**IBM Spectrum Scale could allow a local attacker to invoke a subset of ioctls on the device with invalid arguments that could crash the kernel and cause a denial of service.
CVSS Base score: 6.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/188599 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Remediation/Fixes

IBM recommends that you fix this vulnerability by upgrading affected versions of IBM Elastic Storage System 3000 and 5000 to the following code levels or higher:

V6.0.1.1

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Elastic+Storage+Server+(ESS)&release=6.0.0&platform=Linux+64-bit,x86_64&function=all

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Elastic+Storage+Server+(ESS)&release=6.0.0&platform=Linux+PPC64LE&function=all

Workarounds and Mitigations

None