On 03/08/2016 08:16 PM, Tristan Cacqueray wrote:

=========================================================== OSSA-2016-007: Nova host data leak through resize/migration ===========================================================

:Date: March 08, 2016 :CVE: CVE-2016-2140

Affects

- Nova: <=2015.1.3, >=12.0.0 <=12.0.2


Description

Matthew Booth from Red Hat reported a vulnerability in Nova instance resize/migration. By overwriting an ephemeral or root disk with a malicious image before requesting a resize, an authenticated user may be able to read arbitrary files from the compute host. Only setups using libvirt driver with raw storage and setting "use_cow_images = False" (not default) are affected.

Patches

- https://review.openstack.org/289960 (Kilo)
- https://review.openstack.org/289958 (Liberty)
- https://review.openstack.org/289957 (Mitaka)


Credits

• Matthew Booth from Red Hat (CVE-2016-2140)

References

- https://bugs.launchpad.net/bugs/1548450
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2140


Notes
~~~~~
- This fix will be included in future 2015.1.3 (kilo) and 12.0.3
  (liberty) releases.

There is a typo in the note, this fix will be included in future 2015.1.4 (kilo). Further advisories will drop that note entirely, use http://releases.openstack.org/ to check stable version number including the fix.

-- Tristan Cacqueray OpenStack Vulnerability Management Team