3.5 Low
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:S/C:P/I:N/A:N
0.001 Low
EPSS
Percentile
48.1%
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, managing
networks, and controlling access through users and projects.
It was found that overwriting the disk inside of an instance with a
malicious image, and then switching the instance to rescue mode, could
potentially allow an authenticated user to access arbitrary files on the
compute host depending on the file permissions and SELinux constraints of
those files. Only setups that used libvirt to spawn instances and which had
the use of cow images disabled (“use_cow_images = False” in nova
configuration) were affected. (CVE-2014-0134)
Red Hat would like to thank the OpenStack Project for reporting this issue.
Upstream acknowledges Stanislaw Pitucha from Hewlett Packard as the
original reporter.
Bug fixes:
The Compute libguestfs did not perform tear down correctly in certain
cases, such as when attempting to perform SSH key injection when no SSH
keys were specified. As a result, libguestfs qemu instances would remain
running, even after the Compute instance with which they were associated
was destroyed. This has been fixed and now tear down of libguestfs occurs
correctly. (BZ#1022627)
Qpid’s driver reconnection delay is not configurable. This and the fact
that the hard-coded delay was quite high became a blocker issue from an HA
perspective. Making this value configurable is not possible for this
version, so the hard-coded delay was changed. The new delay cap is 5
seconds. (BZ#1060772)
Nova was creating a temporary VMware snapshot during a nova snapshot, but
not deleting it on completion. Thus VMware guests could end up with a large
number of unnecessary snapshots. The temporary VMware snapshot is now
deleted on completion of the nova snapshot operation. (BZ#1069429)
The Nova vmware driver was not passing the iscsi server location to the
instance, hence it was not possible to add a cinder iscsi disk to a VMware
instance. The nova vmware driver now correctly passes the iscsi server
location to the instance and it is possible to add a cinder iscsi disk to a
VMware instance. (BZ#1069432)
The nova VMware driver was assigning VNC ports in a way which could cause
collisions between guests. There was a small chance that 2 instances could
be created with the same VNC port. If both instances ran on the same ESX
host, only one of their consoles would be available. However, that console
would be presented when requested for both instances. This has been fixed
so that the nova VMware driver now allocates VNC ports which are unique to
a vcenter, and a user of one instance will not be presented with the
console of another. (BZ#1077017)
Enhancement:
All openstack-nova users are advised to upgrade to these updated packages,
which correct these issues and add this enhancement.