CVE-2015-3241 OpenStack Nova instance migration process does not stop when instance is deleted

Medium 6.8 Published Updated

Remote authenticated users can cause denial of service by resizing and deleting an instance, as the migration process continues consuming resources.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2015-3241?

CVE-2015-3241 is a medium-severity denial of service vulnerability in n/a, published on 8 Sep 2015. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

OpenStack Compute (nova) 2015.1 through 2015.1.1, 2014.2.3, and earlier does not stop the migration process when the instance is deleted, which allows remote authenticated users to cause a denial of service (disk, network, and other resource consumption) by resizing and then deleting an instance.

Weakness: CWE-399

Which versions are affected by CVE-2015-3241?

3 open source packages ship an affected version, including nova. It affects 1 product.

PackageAffectedFixed in
nova PyPIAll versions112.0.0.0b3
nova PyPIAll versions112.0.0.0b3
nova PyPIAll versions12.0.0.0b3
Linux distribution packages (16)
openstack-nova Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-api Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-cells Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-cert Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-common Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-compute Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-conductor Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-console Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-doc Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-network Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-novncproxy Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-objectstore Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-scheduler Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-serialproxy Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
openstack-nova-spicehtml5proxy Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost
python-nova Red Hat:openstack:7::el7All versions0:2015.1.0-18.el7ost

Products include Openstack Nova.

How do I fix CVE-2015-3241?

Upgrade nova to a fixed version for your release line: 112.0.0.0b3 or 12.0.0.0b3.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2015-3241 being exploited?

There is no known exploitation of CVE-2015-3241 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2015-3241, GHSA-3vx7-xff6-h2vx, PYSEC-2026-861, RHSA-2015:1723, UBUNTU-CVE-2015-3241.

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