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USN-1831-1: OpenStack Nova vulnerability

16 May 2013

Nova could be made to crash the system if instances used a specially crafted image.

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Releases

Packages

  • nova - OpenStack Compute cloud infrastructure

Details

Loganathan Parthipan discovered that Nova did not verify the size of QCOW2
instance storage. An authenticated attacker could exploit this to cause a
denial of service by creating an image with a large virtual size with
little data, then filling the virtual disk.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 13.04
Ubuntu 12.10
Ubuntu 12.04

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

References

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Further reading