Articles / Ubuntu: Security update for…

Ubuntu: Security update for Nova

Matthias Weckbecker discovered that, when using the OpenStack API to setup libvirt-based hypervisors, an authenticated user could inject files in arbitrary locations on the file system of the host running Nova. A remote attacker could use this to gain root privileges. Pádraig Brady discovered that an authenticated user could corrupt arbitrary files of the host running Nova. A remote attacker could use this to cause a denial of service or possibly gain privileges.

Updated packages are available from security.ubuntu.com.

==========================================================================
Ubuntu Security Notice USN-1497-1
July 03, 2012

nova vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.04 LTS
- Ubuntu 11.10

Summary:

Nova could be made to overwrite or corrupt arbitrary files in the
compute host file system.

Software Description:
- nova: OpenStack Compute cloud infrastructure

Details:

Matthias Weckbecker discovered that, when using the OpenStack API to
setup libvirt-based hypervisors, an authenticated user could inject
files in arbitrary locations on the file system of the host running
Nova. A remote attacker could use this to gain root privileges. This
issue only affects Ubuntu 12.04 LTS. (CVE-2012-3360)

Pádraig Brady discovered that an authenticated user could corrupt
arbitrary files of the host running Nova. A remote attacker could
use this to cause a denial of service or possibly gain privileges.
(CVE-2012-3361)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 LTS:
 python-nova                     2012.1+stable~20120612-3ee026e-0ubuntu1.1

Ubuntu 11.10:
 python-nova                     2011.3-0ubuntu6.9

In general, a standard system update will make all the necessary changes.

References:
 http://www.ubuntu.com/usn/usn-1497-1
 CVE-2012-3360, CVE-2012-3361

Package Information:
 https://launchpad.net/ubuntu/+source/nova/2012.1+stable~20120612-3ee026e-0ubuntu1.1
 https://launchpad.net/ubuntu/+source/nova/2011.3-0ubuntu6.9
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