---
title: "CVE-2012-2947\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-2012-2947?format=md
keywords: index, follow
---

# CVE-2012-2947

Publication date 2 June 2012

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

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## Description

chan\_iax2.c in the IAX2 channel driver in Certified Asterisk 1.8.11-cert
before 1.8.11-cert2 and Asterisk Open Source 1.8.x before 1.8.12.1 and 10.x
before 10.4.1, when a certain mohinterpret setting is enabled, allows
remote attackers to cause a denial of service (daemon crash) by placing a
call on hold.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2012-2947?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| asterisk | 17.04 zesty | Not affected |
| 16.10 yakkety | Not affected |
| 16.04 LTS xenial | Not affected |
| 15.10 wily | Not affected |
| 15.04 vivid | Not affected |
| 14.10 utopic | Not affected |
| 14.04 LTS trusty | Not in release |
| 13.10 saucy | Not affected |
| 13.04 raring | Not affected |
| 12.10 quantal | Not affected |
| 12.04 LTS precise | Ignored end of life |
| 11.10 oneiric | Ignored end of life |
| 11.04 natty | Ignored end of life |
| 10.04 LTS lucid | Ignored end of life |
| 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)

## Notes

---

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

The default Ubuntu configuration should not be vulnerable since a
suggested music class is present.

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2947)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2012-2947)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2012-2947)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2012-2947)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2012-2947>