CVE-2017-18191
OpenStack Nova Denial of service attack on the compute host
7.5
HIGH
CVSS 3.1
EPSS 2.5%
Description
An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. (The same code error also results in data loss, but that is not a vulnerability because the user loses their own data.) All Nova setups supporting encrypted volumes are affected.
How to fix CVE-2017-18191
To remediate CVE-2017-18191, upgrade the affected package to a fixed version below.
- —upgrade to 2:17.0.0-1 or later
- —upgrade to 15.1.1 or later
Is CVE-2017-18191 being exploited?
Low — EPSS is 2.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2:17.0.0-1
- >= 15.0.0, < 15.1.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |