---
id: CVE-2013-4463
aliases:
  - GHSA-5644-2v3h-5w4x
  - PYSEC-2026-865
title: OpenStack Nova denial of service through compressed disk images
summary: OpenStack Nova denial of service through compressed disk images
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-5644-2v3h-5w4x'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2013-4463'
  - url: 'https://bugs.launchpad.net/nova/+bug/1206081'
  - url: 'https://github.com/openstack/nova'
  - url: >-
      http://github.com/openstack/nova/commit/3cdfe894ab58f7b91bf7fb690fc5bc724e44066f
  - url: >-
      http://github.com/openstack/nova/commit/f6810be4ae1a6c93e7d8017ee67d5344dfdf4a30
  - url: 'http://rhn.redhat.com/errata/RHSA-2014-0112.html'
  - 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: 0.00372
epssPercentile: 0.31061
ingestedAt: '2026-07-08T18:25:45.789Z'
---

## Overview

OpenStack Compute (Nova) Folsom, Grizzly, and Havana does not properly verify the virtual size of a QCOW2 image, which allows local users to cause a denial of service (host file system disk consumption) via a compressed QCOW2 image.  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`