---
id: CVE-2013-4469
aliases:
  - GHSA-2w87-5qcj-j6gx
  - PYSEC-2026-860
title: >-
  OpenStack Compute (Nova) Denial of service due to improper validation of
  virtual size of QCOW2 image
summary: >-
  OpenStack Compute (Nova) Denial of service due to improper validation of
  virtual size of QCOW2 image
severity: low
vendor: nova
product: nova
ecosystem: pip
affected:
  - nova < 12.0.0a0
patched:
  - nova 12.0.0a0
published: '2022-05-17'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-2w87-5qcj-j6gx'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2013-4469'
  - url: >-
      https://github.com/openstack/nova/commit/135faa7b5d9855312bedc19e5e1ecebae34d3d18
  - url: >-
      https://github.com/openstack/nova/commit/3cdfe894ab58f7b91bf7fb690fc5bc724e44066f
  - url: >-
      https://github.com/openstack/nova/commit/f6810be4ae1a6c93e7d8017ee67d5344dfdf4a30
  - url: 'https://bugs.launchpad.net/nova/+bug/1206081'
  - url: 'https://github.com/openstack/nova'
  - url: 'http://www.openwall.com/lists/oss-security/2013/10/31/3'
  - url: 'http://www.ubuntu.com/usn/USN-2247-1'
tags:
  - osv
  - pip
epss: 0.00442
epssPercentile: 0.37824
ingestedAt: '2026-07-08T18:25:44.624Z'
---

## Overview

OpenStack Compute (Nova) Folsom, Grizzly, and Havana, when use_cow_images is set to False, does not verify the virtual size of a QCOW2 image, which allows local users to cause a denial of service (host file system disk consumption) by transferring an image with a large virtual size that does not contain a large amount of data from Glance.  NOTE: this issue is due to an incomplete fix for CVE-2013-2096.

## Affected packages

- `nova < 12.0.0a0`

## Remediation

Upgrade to a patched release:

- `nova 12.0.0a0`