LOW3.5
OpenStack Compute (Nova) before 2015.1.3 (kilo) and 12.0.x before 12.0.1 (liberty), when using libvirt to spawn instances and use_cow_images is set to false, allow remote authenticated users to read arbitrary files by overwriting an instance disk with a crafted image and requesting a snapshot.
CVSS 2.0LOW 2.1
CVSS:2.0/AV:N/AC:H/Au:S/C:P/I:N/A:NCVSS 3.xLOW 3.5
CVSS:3.x/CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N