Red Hat Bugzilla – Bug 1023581
CVE-2013-4469 OpenStack Nova: Incomplete fix for CVE-2013-2096
Last modified: 2016-04-27 00:45:34 EDT
Thierry Carrez of the OpenStack project reports:
Title: Potential Nova denial of service through compressed disk images
Reporter: Pedraig Brady from Red Hat
Affects: All versions
Pedraig Brady from Red Hat additionally discovered that OSSA 2013-012 did
not fully address CVE-2013-2096 in the non-default case where
use_cow_images=False, and malicious qcow images are being transferred
from Glance. In that specific case, an authenticated user could still
consume large amounts of disk space for each instance using the
malicious image, potentially also resulting in a Denial of Service
attack on Nova compute nodes. The provided fixes address both issues.
This issue was CVE SPLIT, please see Bz1023239 for the patches for this issue.
The Red Hat Security Response Team has rated this issue as having moderate security impact. This issue only affects systems that implemented the fix for CVE-2013-2096 (Bz963462) which fails to completely address the problem. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
openstack-nova-2013.1.4-3.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report.
openstack-nova-2013.2-4.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.