CVE-2017-17051
OpenStack Nova DoS by rebuilding the same instance with a new image multiple times
8.6
HIGH
CVSS 3.1
EPSS 0.84%
Description
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.
How to fix CVE-2017-17051
To remediate CVE-2017-17051, upgrade the affected package to a fixed version below.
- —upgrade to 2:16.0.3-6 or later
- —upgrade to 16.0.4 or later
Is CVE-2017-17051 being exploited?
Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2:16.0.3-6
- from 0, < 16.0.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.6 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |