---
title: "CVE-2009-0642\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-2009-0642?format=md
keywords: index, follow
---

# CVE-2009-0642

Publication date 20 February 2009

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

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## Description

ext/openssl/ossl\_ocsp.c in Ruby 1.8 and 1.9 does not properly check the
return value from the OCSP\_basic\_verify function, which might allow remote
attackers to successfully present an invalid X.509 certificate, possibly
involving a revoked certificate.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| ruby1.8 | 11.10 oneiric | Not affected |
| 11.04 natty | Not affected |
| 10.10 maverick | Not affected |
| 10.04 LTS lucid | Not affected |
| 9.10 karmic | Not affected |
| 9.04 jaunty | Fixed 1.8.7.72-3ubuntu0.1 |
| 8.10 intrepid | Fixed 1.8.7.72-1ubuntu0.2 |
| 8.04 LTS hardy | Fixed 1.8.6.111-2ubuntu1.3 |
| 7.10 gutsy | Ignored end of life, was needed |
| 6.06 LTS dapper | Fixed 1.8.4-1ubuntu1.7 |
| ruby1.9 | 11.10 oneiric | Not in release |
| 11.04 natty | Not in release |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not affected |
| 9.10 karmic | Not affected |
| 9.04 jaunty | Fixed 1.9.0.2-9ubuntu1.1 |
| 8.10 intrepid | Fixed 1.9.0.2-7ubuntu1.2 |
| 8.04 LTS hardy | Ignored end of life |
| 7.10 gutsy | 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-2009-0642?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 |
| --- | --- |
| ruby1.8 | * Upstream:   <http://redmine.ruby-lang.org/repositories/revision/ruby-187?rev=22857> * Vendor:   <http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=18;filename=ruby1.8-1.8.7.72-3_1.8.7.72-3.1.patch;att=1;bug=517639> |
| ruby1.9 | * Upstream:   <http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=22440> * Vendor:   <http://patch-tracking.debian.net/patch/series/view/ruby1.9/1.9.0.2-9.1/931_CVE-2009-0642> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0642)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2009-0642)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2009-0642)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2009-0642)

### Related Ubuntu Security Notices (USN)

+ [USN-805-1](https://usn.ubuntu.com/USN-805-1)
+ Ruby vulnerabilities
+ 20 July 2009

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2009-0642>