Security Bulletin: IBM Cloud Manager is affected by the vulnerabilities known as SpectreNG (CVE-2018-3639)

Summary

A third party CPU hardware utilizing speculative execution may be vulnerable to cache timing side-channel analysis known as Variant 4 or SpectreNG. These vulnerabilities have been referred to as part of “SpectreNG” in the media, given their similarity to previously disclosed vulnerabilities. An attacker with local user access may be able to read arbitrary privileged data or system register values by utilizing cache timing side-channel analysis.

Vulnerability Details

CVEID: CVE-2018-3639**
DESCRIPTION:** Multiple Intel CPU’s could allow a local attacker to obtain sensitive information, caused by utilizing sequences of speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known. By conducting targeted cache side-channel attacks, an attacker could exploit this vulnerability to bypass security restrictions and gain read access to privileged memory. Note: This vulnerability is the Speculative Store Bypass (SSB), also known as Variant 4 or “SpectreNG”.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/143569 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N)

Affected Products and Versions

Affected Product Name

|

Affected Versions

—|—
IBM Cloud Manager with OpenStack| V4.3, V4.2, V4.1

Remediation/Fixes

Product

|

VRMF

|

Remediation/First Fix

—|—|—
IBM Cloud Manager with OpenStack| V4.3, V4.2, V4.1|

1. Get fix for affected packages from RedHat Enterprise Linux. Follow the advisory at <https://access.redhat.com/security/vulnerabilities/ssbd&gt;.
2. Install the fixed packages on deployment server, OpenStack controllers, and compute nodes.

Workarounds and Mitigations

None