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Red Hat Virtualization Engine 4.2: RHSA-2018:1676-01 Critical Cache Issue

red hat
Calendar Grey May 22, 2018
Dist Redhat Esm H88
A critical patch for org.ovirt.engine-root mitigates vulnerabilities related to cache depletion in Red Hat Virtualization Platform.
An update for org.ovirt.engine-root is now available for Red Hat Virtualization Engine 4.2

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

The org.ovirt.engine-root is a core component of oVirt.
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)
Note: This is the org.ovirt.engine-root side of the CVE-2018-3639 mitigation.
Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting this issue.

Topics%20covered

Topics Covered

security advisory red hat important org.ovirt.engine-root cache side-channel attack

References

https://access.redhat.com/security/cve/CVE-2018-3639 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/ssbd

Package List

RHV-M 4.2:
Source: ovirt-engine-4.2.3.6-0.1.el7.src.rpm
noarch: ovirt-engine-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-backend-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-dbscripts-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-extensions-api-impl-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-extensions-api-impl-javadoc-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-health-check-bundler-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-lib-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-restapi-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-setup-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-setup-base-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-setup-plugin-ovirt-engine-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-setup-plugin-ovirt-engine-common-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-setup-plugin-vmconsole-proxy-helper-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-setup-plugin-websocket-proxy-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-tools-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-tools-backup-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-vmconsole-proxy-helper-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-webadmin-portal-4.2.3.6-0.1.el7.noarch.rpm ovirt-engine-websocket-proxy-4.2.3.6-0.1.el7.noarch.rpm rhvm-4.2.3.6-0.1.el7.noarch.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2018:1676-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2018:1676
Issue date: 2018-05-21

Topic

An update for org.ovirt.engine-root is now available for Red HatVirtualization Engine 4.2.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory red hat important org.ovirt.engine-root cache side-channel attack

Relevant Releases Architectures

RHV-M 4.2 - noarch

Bugs Fixed

1566890 - CVE-2018-3639 hw: cpu: speculative store bypass

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