RHEL 7 : Virtualization Manager (RHSA-2018:1674) (Spectre)

Medium Nessus Plugin ID 110076

Synopsis

The remote Red Hat host is missing a security update.

Description

An update for rhvm-setup-plugins is now available for Red Hat Virtualization Engine 4.2.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The rhvm-setup-plugins package adds functionality exclusive only to Red Hat Virtualization Manager, and is not available for the upstream ovirt-engine. It includes the configuration of the Red Hat Support plugin, copying downstream-only artifacts to the ISO domain, and links to the knowledgebase and other support material.

The following packages have been upgraded to a later upstream version:
rhvm-setup-plugins (4.2.9). (BZ#1579326)

Security Fix(es) :

* An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-3639)

Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting this issue.

Solution

Update the affected rhvm-setup-plugins package.

See Also

https://access.redhat.com/security/vulnerabilities/ssbd

https://access.redhat.com/errata/RHSA-2018:1674

https://access.redhat.com/security/cve/cve-2018-3639

Plugin Details

Severity: Medium

ID: 110076

File Name: redhat-RHSA-2018-1674.nasl

Version: 1.12

Type: local

Agent: unix

Published: 2018/05/24

Updated: 2019/09/12

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.9

Temporal Score: 3.8

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:N/A:N

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 5.5

Temporal Score: 5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:rhvm-setup-plugins, cpe:/o:redhat:enterprise_linux:7

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2018/05/21

Vulnerability Publication Date: 2018/05/22

Reference Information

CVE: CVE-2018-3639

RHSA: 2018:1674

IAVA: 2018-A-0170