---
title: "CVE-2009-0789\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-2009-0789?format=md
keywords: index, follow
---

# CVE-2009-0789

Publication date 27 March 2009

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

OpenSSL before 0.9.8k on WIN64 and certain other platforms does not
properly handle a malformed ASN.1 structure, which allows remote attackers
to cause a denial of service (invalid memory access and application crash)
by placing this structure in the public key of a certificate, as
demonstrated by an RSA public key.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2009-0789?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| openssl | 8.10 intrepid | Not affected |
| 8.04 LTS hardy | Not affected |
| 7.10 gutsy | Not affected |
| 6.06 LTS dapper | Not affected |

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* [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

---

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

only affects platforms where sizeof(long) < sizeof(void \*). These
are equal on all releases/architectures, thus Ubuntu is not affected.

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0789)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2009-0789)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2009-0789)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2009-0789)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2009-0789>