Bug 571184 (CVE-2015-7548) – <=sys-cluster/nova-12.0.0 - Unprivileged api user can access host data using instance snapshot

• Product: Gentoo Security
• Status: RESOLVED FIXED

[Description Matthew Thode ( prometheanfire ) 2016-01-07 17:58:01 UTC]

Matthew Booth from Red Hat reported a vulnerability in Nova instance
snapshot. By overwriting the disk inside an instance with a malicious
image and requesting a snapshot, an authenticated user would be able to
read an arbitrary file from the compute host. Note that the host file
needs to be readable by the nova user to be exposed except when using
lvm for instance storage, when all files readable by root are exposed.
Only setups using libvirt to spawn instances are vulnerable. Of these,
setups which use filesystem storage, and do not set "use_cow_images =
False" in Nova configuration are not affected. Setups which use ceph or
lvm for instance storage, and setups which use filesystem storage with
"use_cow_images = False" are all affected.

[Comment 1 Matthew Thode ( prometheanfire ) 2016-01-07 18:00:14 UTC]

arches, please stablize =sys-cluster/nova-12.0.0-r1

[Comment 2 Agostino Sarubbo 2016-01-07 20:13:30 UTC]

do you want to handle this before stabilize?
https://bugs.launchpad.net/nova/+bug/1516765

[Comment 3 Matthew Thode ( prometheanfire ) 2016-01-07 20:25:32 UTC]

yes

arches, stablize =sys-cluster/nova-12.0.0-r2

[Comment 4 Matthew Thode ( prometheanfire ) 2016-01-08 13:31:33 UTC]

cleaned up

[Comment 5 Aaron Bauman (RETIRED) 2016-06-30 11:44:27 UTC]

GLSA Vote: No