---
title: "CVE-2008-3903\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-2008-3903?format=md
keywords: index, follow
---

# CVE-2008-3903

Publication date 4 September 2008

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

Toggle side navigation

## Description

Asterisk Open Source 1.2.x before 1.2.32, 1.4.x before 1.4.24.1, and
1.6.0.x before 1.6.0.8; Asterisk Business Edition A.x.x, B.x.x before
B.2.5.8, C.1.x.x before C.1.10.5, and C.2.x.x before C.2.3.3; s800i 1.3.x
before 1.3.0.2; and Trixbox PBX 2.6.1, when Digest authentication and
authalwaysreject are enabled, generates different responses depending on
whether a SIP username is valid, which allows remote attackers to enumerate
valid usernames.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| asterisk | 10.10 maverick | Not affected |
| 10.04 LTS lucid | Not affected |
| 9.10 karmic | Not affected |
| 9.04 jaunty | Ignored end of life |
| 8.10 intrepid | Ignored end of life, was needed |
| 8.04 LTS hardy | Fixed 1:1.4.17~dfsg-2ubuntu1.1 |
| 7.10 gutsy | Ignored end of life, was needed |
| 7.04 feisty | Ignored end of life, was needed |
| 6.06 LTS dapper | 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-2008-3903?format=md#patch-details)

### 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 |
| --- | --- |
| asterisk | * Upstream:   <http://downloads.asterisk.org/pub/security/AST-2009-003-1.4.diff.txt> * Upstream:   <http://downloads.asterisk.org/pub/security/AST-2009-003-1.2.diff.txt> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3903)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2008-3903)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2008-3903)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2008-3903)

### Other references

* <http://downloads.asterisk.org/pub/security/AST-2009-003.html>
* <https://www.cve.org/CVERecord?id=CVE-2008-3903>