---
title: "CVE-2014-6054\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-2014-6054?format=md
keywords: index, follow
---

# CVE-2014-6054

Publication date 24 September 2014

Last updated 26 May 2025

---

Ubuntu priority

**Medium**

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

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## Description

The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in
LibVNCServer 0.9.9 and earlier allows remote attackers to cause a denial of
service (divide-by-zero error and server crash) via a zero value in the
scaling factor in a (1) PalmVNCSetScaleFactor or (2) SetScale message.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| italc | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic | Not affected |
| 16.04 LTS xenial | Fixed 1:2.0.2+dfsg1-4ubuntu0.1 |
| 14.04 LTS trusty | Not in release |
| krfb | 14.04 LTS trusty | Fixed 4:4.13.3-0ubuntu1.1 |
| 12.04 LTS precise | Not in release |
| 10.04 LTS lucid | Not in release |
| libvncserver | 14.04 LTS trusty | Fixed 0.9.9+dfsg-1ubuntu1.1 |
| 12.04 LTS precise | Fixed 0.9.8.2-2ubuntu1.1 |
| 10.04 LTS lucid | 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-2014-6054?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 |
| --- | --- |
| krfb | * Upstream:   <http://quickgit.kde.org/?p=krfb.git&a=commit&h=126a746dd7bee35840083e9bec7a52935a010346> |
| libvncserver | * Upstream:   [05a9bd4](https://github.com/newsoft/libvncserver/commit/05a9bd41a8ec0a9d580a8f420f41718bdd235446) * Upstream:   [f18f24c](https://github.com/newsoft/libvncserver/commit/f18f24ce65f5cac22ddcf3ed51417e477f9bad09) * Upstream:   [5dee1cb](https://github.com/newsoft/libvncserver/commit/5dee1cbcd83920370a487c4fd2718aa4d3eba548) * Upstream:   [819481c](https://github.com/newsoft/libvncserver/commit/819481c5e2003cd36d002336c248de8c75de362e) * Upstream:   [e5d9b6a](https://github.com/newsoft/libvncserver/commit/e5d9b6a07257c12bf3b6242ddea79ea1c95353a8) |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6054)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2014-6054)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2014-6054)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2014-6054)

### Related Ubuntu Security Notices (USN)

+ [USN-2365-1](https://usn.ubuntu.com/USN-2365-1)
+ LibVNCServer vulnerabilities
+ 29 September 2014

+ [USN-4587-1](https://usn.ubuntu.com/USN-4587-1)
+ iTALC vulnerabilities
+ 20 October 2020

### Other references

* <http://seclists.org/oss-sec/2014/q3/639>
* <http://www.kde.org/info/security/advisory-20140923-1.txt>
* <http://www.ocert.org/advisories/ocert-2014-007.html>
* <https://www.cve.org/CVERecord?id=CVE-2014-6054>