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Ubuntu Security Notice USN-3449-1
October 11, 2017

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

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in OpenStack Nova.

Software Description:
- nova: OpenStack Compute cloud infrastructure

Details:

George Shuklin discovered that OpenStack Nova incorrectly handled the
migration process. A remote authenticated user could use this issue to
consume resources, resulting in a denial of service. (CVE-2015-3241)

George Shuklin and Tushar Patil discovered that OpenStack Nova incorrectly
handled deleting instances. A remote authenticated user could use this
issue to consume disk resources, resulting in a denial of service.
(CVE-2015-3280)

It was discovered that OpenStack Nova incorrectly limited qemu-img calls. A
remote authenticated user could use this issue to consume resources,
resulting in a denial of service. (CVE-2015-5162)

Matthew Booth discovered that OpenStack Nova incorrectly handled snapshots.
A remote authenticated user could use this issue to read arbitrary files.
(CVE-2015-7548)

Sreekumar S. and Suntao discovered that OpenStack Nova incorrectly applied
security group changes. A remote attacker could possibly use this issue to
bypass intended restriction changes by leveraging an instance that was
running when the change was made. (CVE-2015-7713)

Matt Riedemann discovered that OpenStack Nova incorrectly handled logging.
A local attacker could possibly use this issue to obtain sensitive
information from log files. (CVE-2015-8749)

Matthew Booth discovered that OpenStack Nova incorrectly handled certain
qcow2 headers. A remote authenticated user could possibly use this issue to
read arbitrary files. (CVE-2016-2140)

Update instructions:

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

Ubuntu 14.04 LTS:
  python-nova                     1:2014.1.5-0ubuntu1.7

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

References:
  https://www.ubuntu.com/usn/usn-3449-1
  CVE-2015-3241, CVE-2015-3280, CVE-2015-5162, CVE-2015-7548,
  CVE-2015-7713, CVE-2015-8749, CVE-2016-2140

Package Information:
  https://launchpad.net/ubuntu/+source/nova/1:2014.1.5-0ubuntu1.7