---
title: "CVE-2013-6449\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-2013-6449?format=md
keywords: index, follow
---

# CVE-2013-6449

Publication date 23 December 2013

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

The ssl\_get\_algorithm2 function in ssl/s3\_lib.c in OpenSSL before 1.0.2
obtains a certain version number from an incorrect data structure, which
allows remote attackers to cause a denial of service (daemon crash) via
crafted traffic from a TLS 1.2 client.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2013-6449?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| openssl | 13.10 saucy | Fixed 1.0.1e-3ubuntu1.1 |
| 13.04 raring | Fixed 1.0.1c-4ubuntu8.2 |
| 12.10 quantal | Fixed 1.0.1c-3ubuntu2.6 |
| 12.04 LTS precise | Fixed 1.0.1-4ubuntu5.11 |
| 10.04 LTS lucid | 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-2013-6449?format=md#patch-details)

## Notes

---

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

only 1.0.1+

### 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://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=0294b2be5f4c11e60620c0018674ff0e17b14238> * Upstream:   <http://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=ca989269a2876bae79393bd54c3e72d49975fc75> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6449)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2013-6449)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2013-6449)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2013-6449)

### Related Ubuntu Security Notices (USN)

+ [USN-2079-1](https://usn.ubuntu.com/USN-2079-1)
+ OpenSSL vulnerabilities
+ 9 January 2014

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2013-6449>