---
title: "CVE-2010-0433\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-2010-0433?format=md
keywords: index, follow
---

# CVE-2010-0433

Publication date 5 March 2010

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

The kssl\_keytab\_is\_available function in ssl/kssl.c in OpenSSL before
0.9.8n, when Kerberos is enabled but Kerberos configuration files cannot be
opened, does not check a certain return value, which allows remote
attackers to cause a denial of service (NULL pointer dereference and daemon
crash) via SSL cipher negotiation, as demonstrated by a chroot installation
of Dovecot or stunnel without Kerberos configuration files inside the
chroot.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2010-0433?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| openssl | 9.10 karmic | Not affected |
| 9.04 jaunty | Not affected |
| 8.10 intrepid | Not affected |
| 8.04 LTS hardy | Not affected |
| 6.06 LTS dapper | Not affected |

---

* [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-2010-0433?format=md#patch-details)

## Notes

---

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

Ubuntu doesn't build openssl with kerberos support

### 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 |
| --- | --- |
| openssl | * Upstream:   <http://cvs.openssl.org/chngview?cn=19374> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0433)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2010-0433)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2010-0433)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2010-0433)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2010-0433>