---
title: "CVE-2011-4128\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-2011-4128?format=md
keywords: index, follow
---

# CVE-2011-4128

Publication date 8 December 2011

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

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## Description

Buffer overflow in the gnutls\_session\_get\_data function in
lib/gnutls\_session.c in GnuTLS 2.12.x before 2.12.14 and 3.x before 3.0.7,
when used on a client that performs nonstandard session resumption, allows
remote TLS servers to cause a denial of service (application crash) via a
large SessionTicket.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2011-4128?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| gnutls13 | 11.10 oneiric | Not in release |
| 11.04 natty | Not in release |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not in release |
| 8.04 LTS hardy | Fixed 2.0.4-1ubuntu2.7 |
| gnutls26 | 11.10 oneiric | Fixed 2.10.5-1ubuntu3.1 |
| 11.04 natty | Fixed 2.8.6-1ubuntu2.1 |
| 10.10 maverick | Fixed 2.8.6-1ubuntu0.1 |
| 10.04 LTS lucid | Fixed 2.8.5-2ubuntu0.1 |
| 8.04 LTS hardy | Not in release |

---

* [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-2011-4128?format=md#patch-details)

## Notes

---

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

According to upstream, this is client side only and requires clients
to be written in a certain undocumented way. Upstream searched for this and
found no clients to be vulnerable.

### 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 |
| --- | --- |
| gnutls13 | * Upstream:   <http://git.savannah.gnu.org/gitweb/?p=gnutls.git;a=commitdiff;h=190cef6eed37d0e73a73c1e205eb31d45ab60a3c> * Upstream:   <http://git.savannah.gnu.org/gitweb/?p=gnutls.git;a=commitdiff;h=e82ef4545e9e98cbcb032f55d7c750b81e3a0450> |
| gnutls26 | * Upstream:   <http://git.savannah.gnu.org/gitweb/?p=gnutls.git;a=commitdiff;h=190cef6eed37d0e73a73c1e205eb31d45ab60a3c> * Upstream:   <http://git.savannah.gnu.org/gitweb/?p=gnutls.git;a=commitdiff;h=e82ef4545e9e98cbcb032f55d7c750b81e3a0450> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4128)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-4128)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-4128)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-4128)

### Related Ubuntu Security Notices (USN)

+ [USN-1418-1](https://usn.ubuntu.com/USN-1418-1)
+ GnuTLS vulnerabilities
+ 5 April 2012

### Other references

* <http://www.gnu.org/s/gnutls/security.html>
* <http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/5596>
* <https://www.cve.org/CVERecord?id=CVE-2011-4128>