Ubuntu Security Notice USN-1305-1
December 13, 2011
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
Nova could be made to overwrite files.
- nova: OpenStack Compute cloud infrastructure
David Black discovered that Nova did not properly perform input validation
during image registration. An attacker could exploit this by registering a
crafted image using the EC2 API or S3/RegisterImage method and overwrite
files as the nova user.
The problem can be corrected by updating your system to the following
In general, a standard system update will make all the necessary changes.