RHSA-2018:2855 - Security Advisory

Topic

An update for openstack-nova is now available for Red Hat OpenStack Platform 9.0 (Mitaka).

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

Description

OpenStack Compute (nova) launches and schedules large networks of virtual machines, creating a redundant and scalable cloud computing platform. Compute provides the software, control panels, and APIs required to orchestrate a cloud, including running virtual machine instances and controlling access through users and projects.

Security Fix(es):

• openstack-nova: Swapping encrypted volumes can allow an attacker to corrupt the LUKS header causing a denial of service in the host (CVE-2017-18191)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• This update fixes a race condition that could generate error messages and cause migration failures during nova live migrations.

Prior to this update, if a domain was already cleaned out by periodic tasks, undefining the domain source during a live migration sometimes generated a "Domain not found (Code=42)" error. (BZ#1614325)

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

Affected Products

• Red Hat OpenStack 9 x86_64

Fixes

• BZ - 1545330 - I/O latency of cinder volume after live migration increases
• BZ - 1546937 - CVE-2017-18191 openstack-nova: Swapping encrypted volumes can allow an attacker to corrupt the LUKS header causing a denial of service in the host
• BZ - 1569952 - preallocate_images = space is not honoured when using qcow2

CVEs

• CVE-2017-18191

References

• https://access.redhat.com/security/updates/classification/#moderate