---
id: CVE-2014-3517
aliases:
  - GHSA-xjmj-p278-4jp5
  - PYSEC-2026-884
title: >-
  OpenStack Compute (Nova) Exposure of Sensitive Information to an Unauthorized
  Actor vulnerability
summary: >-
  OpenStack Compute (Nova) Exposure of Sensitive Information to an Unauthorized
  Actor vulnerability
severity: medium
vendor: nova
product: nova
ecosystem: pip
affected:
  - nova < 2013.2.4
  - 'nova >= 2014.0.0, < 2014.1.2'
patched:
  - nova 2013.2.4
  - nova 2014.1.2
published: '2022-05-14'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:06.880429708Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-xjmj-p278-4jp5'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2014-3517'
  - url: 'https://access.redhat.com/errata/RHSA-2014:0940'
  - url: 'https://access.redhat.com/errata/RHSA-2014:1084'
  - url: 'https://access.redhat.com/security/cve/CVE-2014-3517'
  - url: 'https://bugs.launchpad.net/nova/+bug/1325128'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=1112499'
  - url: 'https://opendev.org/openstack/nova'
  - url: 'http://www.openwall.com/lists/oss-security/2014/07/17/2'
tags:
  - osv
  - pip
epss: 0.01954
epssPercentile: 0.79127
ingestedAt: '2026-07-08T18:25:54.200Z'
---

## Overview

api/metadata/handler.py in OpenStack Compute (Nova) before 2013.2.4, 2014.x before 2014.1.2, and Juno before Juno-2, when proxying metadata requests through Neutron, makes it easier for remote attackers to guess instance ID signatures via a brute-force attack that relies on timing differences in responses to instance metadata requests.

## Affected packages

- `nova < 2013.2.4`
- `nova >= 2014.0.0, < 2014.1.2`

## Remediation

Upgrade to a patched release:

- `nova 2013.2.4`
- `nova 2014.1.2`