The i_create_images_and_backing (aka create_images_and_backing) method in libvirt driver in OpenStack Compute (Nova) Grizzly, Havana, and Icehouse, when using KVM live block migration, does not properly create all expected files, which allows attackers to obtain snapshot root disk contents of other users via ephemeral storage.

The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2247-1 advisory.

    Darragh O'Reilly discovered that the Ubuntu packaging for OpenStack Nova did not properly set up its sudo     configuration. If a different flaw was found in OpenStack Nova, this vulnerability could be used to     escalate privileges. This issue only affected Ubuntu 13.10 and Ubuntu 14.04 LTS. (CVE-2013-1068)

    Bernhard M. Wiedemann and Pedraig Brady discovered that OpenStack Nova did not properly verify the virtual     size of a QCOW2 images. A remote authenticated attacker could exploit this to create a denial of service     via disk consumption. This issue did not affect Ubuntu 14.04 LTS. (CVE-2013-4463, CVE-2013-4469)

    JuanFra Rodriguez Cardoso discovered that OpenStack Nova did not enforce SSL connections when Nova was     configured to use QPid and qpid_protocol is set to 'ssl'. If a remote attacker were able to perform a     machine-in-the-middle attack, this flaw could be exploited to view sensitive information. Ubuntu does not     use QPid with Nova by default. This issue did not affect Ubuntu 14.04 LTS. (CVE-2013-6491)

    Loganathan Parthipan discovered that OpenStack Nova did not properly create expected files during KVM live     block migration. A remote authenticated attacker could exploit this to obtain root disk snapshot contents     via ephemeral storage. This issue did not affect Ubuntu 14.04 LTS. (CVE-2013-7130)

    Stanislaw Pitucha discovered that OpenStack Nova did not enforce the image format when rescuing an     instance. A remote authenticated attacker could exploit this to read host files. In the default     installation, attackers would be isolated by the libvirt guest AppArmor profile. This issue only affected     Ubuntu 13.10. (CVE-2014-0134)

    Mark Heckmann discovered that OpenStack Nova did not enforce RBAC policy when adding security group rules     via the EC2 API. A remote authenticated user could exploit this to gain unintended access to this API.
    This issue only affected Ubuntu 13.10. (CVE-2014-0167)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Fix root disk leak in live migration - CVE-2013-7130

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
76109	Ubuntu 14.04 LTS : OpenStack Nova vulnerabilities (USN-2247-1)	Nessus	Ubuntu Local Security Checks	high
72310	Fedora 19 : openstack-nova-2013.1.4-6.fc19 (2014-1516)	Nessus	Fedora Local Security Checks	high
72309	Fedora 20 : openstack-nova-2013.2.1-4.fc20 (2014-1463)	Nessus	Fedora Local Security Checks	high

Detections

Analytics

CVE-2013-7130

critical

Tenable Plugins

high

high

high