---
title: "CVE-2014-3517\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2014-3517?format=md
keywords: index, follow
---

# CVE-2014-3517

Publication date 7 August 2014

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

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## Description

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.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2014-3517?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| nova | 14.04 LTS trusty | Fixed 1:2014.1.2-0ubuntu1.1 |
| 12.04 LTS precise | Not affected |
| 10.04 LTS lucid | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2014-3517?format=md#patch-details)

## Notes

---

### [jdstrand](https://launchpad.net/~jdstrand)

per upstream, Only setups configured to proxy metadata requests via
Neutron are affected

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| nova | * Upstream:   <https://review.openstack.org/107396> * Upstream:   <https://review.openstack.org/#/c/107397/> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3517)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2014-3517)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2014-3517)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2014-3517)

### Related Ubuntu Security Notices (USN)

+ [USN-2325-1](https://usn.ubuntu.com/USN-2325-1)
+ OpenStack Nova vulnerability
+ 21 August 2014

### Other references

* <http://lists.openstack.org/pipermail/openstack-announce/2014-July/000253.html>
* <https://www.cve.org/CVERecord?id=CVE-2014-3517>