Ubuntu Security Notice USN-1545-1
22nd August, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 11.10
Nova could be made to overwrite or corrupt arbitrary files in the compute host file system.
- nova - OpenStack Compute cloud infrastructure
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.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 12.04 LTS:
- python-nova 2012.1+stable~20120612-3ee026e-0ubuntu1.3
- Ubuntu 11.10:
- python-nova 2011.3-0ubuntu6.10
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.