CVE-2017-16239
nova - security update
6.5
MEDIUM
CVSS 3.1
EPSS 0.39%
Description
In OpenStack Nova through 14.0.9, 15.x through 15.0.7, and 16.x through 16.0.2, by rebuilding an instance, an authenticated user may be able to circumvent the Filter Scheduler bypassing imposed filters (for example, the ImagePropertiesFilter or the IsolatedHostsFilter). All setups using Nova Filter Scheduler are affected. Because of the regression described in Launchpad Bug #1732947, the preferred fix is a 14.x version after 14.0.10, a 15.x version after 15.0.8, or a 16.x version after 16.0.3.
How to fix CVE-2017-16239
To remediate CVE-2017-16239, upgrade the affected package to a fixed version below.
- —upgrade to 2:16.0.3-1 or later
- —upgrade to 2:14.0.0-4+deb9u1 or later
- —upgrade to 16.0.3 or later
Is CVE-2017-16239 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2:16.0.3-1
- from 0, < 2:14.0.0-4+deb9u1
- >= 16.0.0, < 16.0.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |