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CVE-2017-17051

Published: 5 December 2017

An issue was discovered in the default FilterScheduler in OpenStack Nova 16.0.3. By repeatedly rebuilding an instance with new images, an authenticated user may consume untracked resources on a hypervisor host leading to a denial of service, aka doubled resource allocations. This regression was introduced with the fix for OSSA-2017-005 (CVE-2017-16239); however, only Nova stable/pike or later deployments with that fix applied and relying on the default FilterScheduler are affected.

Notes

AuthorNote
mdeslaur
only affects pike and later

Priority

Medium

Cvss 3 Severity Score

8.6

Score breakdown

Status

Package Release Status
nova
Launchpad, Ubuntu, Debian
artful
Released (2:16.1.2-0ubuntu1)
bionic Not vulnerable
(2:17.0.0~rc2-0ubuntu1)
trusty Does not exist
(trusty was not-affected [code not present])
upstream Needs triage

xenial Not vulnerable
(code not present)
zesty Ignored
(end of life)
Patches:
upstream: https://review.openstack.org/521662 (queens)
upstream: https://review.openstack.org/523214 (pike)

Severity score breakdown

Parameter Value
Base score 8.6
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Changed
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H