OpenStack Compute (Nova) Folsom, Grizzly, and Havana does not properly verify the virtual size of a QCOW2 image, which allows local users to cause a denial of service (host file system disk consumption) via a compressed QCOW2 image. NOTE: this issue is due to an incomplete fix for CVE-2013-2096.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - OpenStack Compute (Nova) Folsom, Grizzly, and Havana does not properly verify the virtual size of a QCOW2
    image, which allows local users to cause a denial of service (host file system disk consumption) via a
    compressed QCOW2 image. NOTE: this issue is due to an incomplete fix for CVE-2013-2096. (CVE-2013-4463)

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2014:0112 advisory.

    The openstack-nova packages provide OpenStack Compute (nova), which     provides services for provisioning, managing, and using virtual     machine instances.

    It was discovered that enabling qpid_protocol = ssl in the nova.conf file     did not result in nova using SSL to communicate to Qpid. If Qpid was not     configured to enforce SSL this could lead to sensitive information being     sent unencrypted over the communication channel. (CVE-2013-6491)

    A flaw was found in the way OpenStack Compute controlled the size of disk     images. An authenticated remote user could use malicious compressed qcow2     disk images to consume large amounts of disk space, potentially causing a     denial of service on the OpenStack Compute nodes. (CVE-2013-4463)

    Red Hat would like to thank the OpenStack project for reporting     CVE-2013-4463. Upstream acknowledges Bernhard M. Wiedemann of SuSE as the     original reporter of this issue.

    This update also fixes the following bugs:

    * When using GroupAntiAffinityFilter, the scheduler was not filtering     instances in the group, which could cause an instance to not be scheduled     at all if a group was specified on boot. With this fix, groups are taken     into account and the instance is scheduled as expected. (BZ#1014948)

    * If an exchange had not been created previously by a consumer, the     publisher would crash because it could not find the specified exchange.
    This resulted from Qpid's direct publisher using the wrong exchange type     'Direct'. With this fix, the exchange type in the publisher has been     changed to 'direct'. (BZ#1042055)

    * Unhandled errors in the Qpid consuming thread could kill it silently and     isolate the component from the rest of the system. To fix this, the     consuming thread has been made more resilient to errors by ensuring it does     not die on an unhandled error. Compute now logs the error and retries the     consuming thread. (BZ#1050213)

    All openstack-nova users are advised to upgrade to these updated packages,     which contain backported patches to correct these issues.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

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.

- Ensure we don't boot oversized images (CVE-2013-4463 and     CVE-2013-2096)

    - Require ipmitool for baremetal driver (#1022243)

    - Remove cert and scheduler hard dependency on       cinderclient (#1031679)

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.

Fix CVE-2013-4469 and CVE-2013-4463 Fix CVE-2013-4469 and CVE-2013-4463

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
434569	SCA: security update for nova (GHSA-5644-2v3h-5w4x)	Tenable Cloud Security	SCA Checks	high
434569	SCA: security update for nova (GHSA-5644-2v3h-5w4x)	Tenable Self-Hosted Container Security	SCA Checks	high
234390	RHEL 6 : openstack-nova (RHSA-2014:0112)	Nessus	Red Hat Local Security Checks	high
76109	Ubuntu 14.04 LTS : OpenStack Nova vulnerabilities (USN-2247-1)	Nessus	Ubuntu Local Security Checks	high
71418	Fedora 20 : openstack-nova-2013.2-4.fc20 (2013-22667)	Nessus	Fedora Local Security Checks	low
71363	Fedora 19 : openstack-nova-2013.1.4-3.fc19 (2013-22693)	Nessus	Fedora Local Security Checks	low

Detections

Analytics

CVE-2013-4463

high

Tenable Plugins

high

high

high

high

low

low