RHSA-2014:1337 - Security Advisory

Topic

Updated openstack-glance packages that fix one security issue and two bugs
are now available for Red Hat Enterprise Linux OpenStack Platform 5.0 for
Red Hat Enterprise Linux 7.

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

Description

OpenStack Image service (glance) provides discovery, registration, and
delivery services for disk and server images. It provides the ability to
copy or snapshot a server image, and immediately store it away. Stored
images can be used as a template to get new servers up and running quickly
and more consistently than installing a server operating system and
individually configuring additional services.

It was discovered that the image_size_cap configuration option in glance
was not honored. An authenticated user could use this flaw to upload an
image to glance and consume all available storage space, resulting in a
denial of service. (CVE-2014-5356)

This update also fixes the following bugs:

• Uploading an image to glance that exceeded the user's current quota

setting was rejected, but no message was added to the glance API log to
indicate this. This update fixes this bug, and such events are now logged
as INFO messages in the glance API log. (BZ#1055550)

• Whenever the 'x-image-meta-store' header was passed to glance-api, the

service would check whether the value was a valid store instead of a valid
scheme. However, the rest of the store library uses the scheme to identify
the store that should be used; this prevented the use of this feature.
Glance now verifies that the value of 'x-image-meta-store' is a valid
scheme instead of a valid store name. (BZ#1130622)

All openstack-glance users are advised to upgrade to these updated
packages, which correct these issues.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the
Red Hat Network to apply this update are available at
https://access.redhat.com/articles/11258

Affected Products

• Red Hat OpenStack 5.0 for RHEL 7 x86_64

Fixes

• BZ - 1055550 - glance: no error reported in api.log when image create is killed on quota
• BZ - 1130622 - Glance `--store` checks on store name instead of scheme
• BZ - 1131770 - CVE-2014-5356 openstack-glance: Glance store disk space exhaustion

CVEs

• CVE-2014-5356

References

• http://www.redhat.com/security/updates/classification/#moderate