---
title: "CVE-2013-0335\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-2013-0335?format=md
keywords: index, follow
---

# CVE-2013-0335

Publication date 26 February 2013

Last updated 7 August 2026

---

Ubuntu priority

**Low**

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

## Cvss 3 Severity Score

**7.6 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2013-0335?format=md#impact-score)

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## Description

OpenStack Compute (Nova) Grizzly, Folsom (2012.2), and Essex (2012.1)
allows remote authenticated users to gain access to a VM in opportunistic
circumstances by using the VNC token for a deleted VM that was bound to the
same VNC port.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2013-0335?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| nova | 12.10 quantal | Fixed 2012.2.1+stable-20121212-a99a802e-0ubuntu1.4 |
| 12.04 LTS precise | Fixed 2012.1.3+stable-20120827-4d2a4afe-0ubuntu1.4 |
| 11.10 oneiric | Ignored |
| 10.04 LTS lucid | Not in release |
| 8.04 LTS hardy | 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-2013-0335?format=md#patch-details)

## Notes

---

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

on 11.10, VNC consoles are only available via the web interface,
but the web interface (horizon) is not functional since it depends on
keystone and the keystone in 11.10 is a pre-release version and unusable with
other components like horizon and nova.

### 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/#/c/22086/> * Upstream:   <https://review.openstack.org/#/c/22758> * Upstream:   <https://review.openstack.org/#/c/22872/> * Upstream:   <https://review.openstack.org/#/c/23036/> |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.6 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | Low |
  | Integrity impact | High |
  | Availability impact | Low |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.6 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0335)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2013-0335)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2013-0335)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2013-0335)

### Related Ubuntu Security Notices (USN)

+ [USN-1771-1](https://usn.ubuntu.com/USN-1771-1)
+ OpenStack Nova vulnerabilities
+ 20 March 2013

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2013-0335>