---
title: "CVE-2012-3371\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-2012-3371?format=md
keywords: index, follow
---

# CVE-2012-3371

Publication date 11 July 2012

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

The Nova scheduler in OpenStack Compute (Nova) Folsom (2012.2) and Essex
(2012.1), when DifferentHostFilter or SameHostFilter is enabled, allows
remote authenticated users to cause a denial of service (excessive database
lookup calls and server hang) via a request with many repeated IDs in the
os:scheduler\_hints section.
Dan Prince from Red Hat reported a vulnerability in Nova scheduler
nodes. By creating servers with malicious scheduler\_hints, an
authenticated user may generate a huge amount of database calls,
potentially resulting in a Denial of Service attack against Nova
scheduler nodes. Only setups exposing the OpenStack API and enabling
DifferentHostFilter and/or SameHostFilter are affected.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2012-3371?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| nova | 12.04 LTS precise | Fixed 2012.1+stable~20120612-3ee026e-0ubuntu1.2 |
| 11.10 oneiric | Not affected |
| 11.04 natty | Not affected |
| 10.04 LTS lucid | Not in release |
| 8.04 LTS hardy | Not in release |

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* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Notes

---

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

Essex and newer are affected

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3371)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2012-3371)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2012-3371)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2012-3371)

### Related Ubuntu Security Notices (USN)

+ [USN-1501-1](https://usn.ubuntu.com/USN-1501-1)
+ Nova vulnerability
+ 11 July 2012

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2012-3371>