Ubuntu: 1545-1: Nova vulnerability
Posted by Benjamin D. Thomas   
Ubuntu Nova could be made to overwrite or corrupt arbitrary files in the computehost file system.
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Ubuntu Security Notice USN-1545-1
August 22, 2012

nova vulnerability
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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:

Padraig Brady discovered that the fix for CVE-2012-3361 was incomplete and
an authenticated user could still corrupt arbitrary files on the host
running Nova. A remote attacker could use this to cause a denial of service
or possibly gain privileges.

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-0ubuntu1.3

Ubuntu 11.10:
  python-nova                     2011.3-0ubuntu6.10

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

References:
  http://www.ubuntu.com/usn/usn-1545-1
  CVE-2012-3447

Package Information:
  https://launchpad.net/ubuntu/+source/nova/2012.1+stable~20120612-3ee026e-0ubuntu1.3
  https://launchpad.net/ubuntu/+source/nova/2011.3-0ubuntu6.10