---
title: "CVE-2012-4423\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-2012-4423?format=md
keywords: index, follow
---

# CVE-2012-4423

Publication date 19 November 2012

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

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## Description

The virNetServerProgramDispatchCall function in libvirt before 0.10.2
allows remote attackers to cause a denial of service (NULL pointer
dereference and segmentation fault) via an RPC call with (1) an event as
the RPC number or (2) an RPC number whose value is in a "gap" in the RPC
dispatch table.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2012-4423?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| libvirt | 12.10 quantal | Fixed 0.9.13-0ubuntu10 |
| 12.04 LTS precise | Fixed 0.9.8-2ubuntu17.7 |
| 11.10 oneiric | Not affected |
| 11.04 natty | Ignored end of life |
| 10.04 LTS lucid | Not affected |
| 8.04 LTS hardy | Ignored end of life |

---

* [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-2012-4423?format=md#patch-details)

## Notes

---

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

introduced in 0.9.3

### 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 |
| --- | --- |
| libvirt | * Upstream:   <http://libvirt.org/git/?p=libvirt.git;a=commit;h=b7ff9e696063189a715802d081d55a398663c15a> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4423)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2012-4423)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2012-4423)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2012-4423)

### Related Ubuntu Security Notices (USN)

+ [USN-1708-1](https://usn.ubuntu.com/USN-1708-1)
+ libvirt vulnerabilities
+ 29 January 2013

### Other references

* <http://www.openwall.com/lists/oss-security/2012/09/13/11>
* <https://www.redhat.com/archives/libvir-list/2012-September/msg00843.html>
* <https://www.cve.org/CVERecord?id=CVE-2012-4423>