---
title: "CVE-2009-0050\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-2009-0050?format=md
keywords: index, follow
---

# CVE-2009-0050

Publication date 7 January 2009

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

Lasso 2.2.1 and earlier does not properly check the return value from the
OpenSSL DSA\_verify function, which allows remote attackers to bypass
validation of the certificate chain via a malformed SSL/TLS signature, a
similar vulnerability to CVE-2008-5077.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| lasso | 8.10 intrepid | Fixed 2.2.0-1ubuntu0.1 |
| 8.04 LTS hardy | Fixed 2.1.1-2ubuntu1.1 |
| 7.10 gutsy | Fixed 2.0.0-1ubuntu1.1 |
| 6.06 LTS dapper | Fixed 0.6.3-4ubuntu1.1 |

---

* [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-2009-0050?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 |
| --- | --- |
| lasso | * Debdiff:   <https://bugs.launchpad.net/ubuntu/+source/lasso/+bug/317181> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0050)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2009-0050)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2009-0050)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2009-0050)

### Other references

* <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511262>
* <https://www.cve.org/CVERecord?id=CVE-2009-0050>