OpenStack Compute (nova) before 2014.2.4 (juno) and 2015.1.x before 2015.1.2 (kilo) does not properly delete instances from compute nodes, which allows remote authenticated users to cause a denial of service (disk consumption) by deleting instances while in the resize state.
Exploitability
AV:NAC:LAu:SImpact
C:NI:NA:C6.8/AV:N/AC:L/Au:S/C:N/I:N/A:C