--- title: "CVE-2014-3423\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-2014-3423?format=md keywords: index, follow --- # CVE-2014-3423 Publication date 8 May 2014 Last updated 22 May 2026 --- Ubuntu priority **Negligible** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description lisp/net/browse-url.el in GNU Emacs 24.3 and earlier allows local users to overwrite arbitrary files via a symlink attack on a /tmp/Mosaic.##### temporary file. [Read the notes from the security team](https://ubuntu.com/security/CVE-2014-3423?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | emacs-snapshot | 19.04 disco | Not in release | | 18.10 cosmic | Not in release | | 18.04 LTS bionic | Not in release | | 17.10 artful | Not in release | | 17.04 zesty | Not in release | | 16.10 yakkety | Not in release | | 16.04 LTS xenial | Not in release | | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Ignored end of life | | emacs22 | 19.04 disco | Not in release | | 18.10 cosmic | Not in release | | 18.04 LTS bionic | Not in release | | 17.10 artful | Not in release | | 17.04 zesty | Not in release | | 16.10 yakkety | Not in release | | 16.04 LTS xenial | Not in release | | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Not in release | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not in release | | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 10.04 LTS lucid | Ignored end of life | | emacs23 | 19.04 disco | Not in release | | 18.10 cosmic | Not in release | | 18.04 LTS bionic | Not in release | | 17.10 artful | Not in release | | 17.04 zesty | Not in release | | 16.10 yakkety | Not in release | | 16.04 LTS xenial | Not in release | | 15.10 wily | Not in release | | 15.04 vivid | Not in release | | 14.10 utopic | Ignored end of life | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored end of life | | 12.10 quantal | Ignored end of life | | 12.04 LTS precise | Ignored end of life | | 10.04 LTS lucid | Ignored end of life | | emacs24 | 19.04 disco | Not in release | | 18.10 cosmic | Not in release | | 18.04 LTS bionic | Not in release | | 17.10 artful | Not in release | | 17.04 zesty | Not affected | | 16.04 LTS xenial | Not affected | | 14.04 LTS trusty | Not in release | | emacs25 | 19.04 disco | Not in release | | 18.10 cosmic | Not in release | | 18.04 LTS bionic | Not affected | | 17.10 artful | Not affected | | 17.04 zesty | Not affected | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | | xemacs21 | 19.04 disco | Not in release | | 18.10 cosmic | Not in release | | 18.04 LTS bionic | Not affected | | 17.10 artful | Not affected | | 17.04 zesty | Not affected | | 16.10 yakkety | Not affected | | 16.04 LTS xenial | Not affected | | 15.10 wily | Not affected | | 15.04 vivid | Not affected | | 14.10 utopic | Not affected | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Not affected | | 12.10 quantal | Not affected | | 12.04 LTS precise | Not affected | | 10.04 LTS lucid | Ignored end of life | | xemacs21-packages | 19.04 disco | Not in release | | 18.10 cosmic | Not in release | | 18.04 LTS bionic | Not affected | | 17.10 artful | Ignored end of life | | 17.04 zesty | Ignored end of life | | 16.10 yakkety | Ignored end of life | | 16.04 LTS xenial | Not affected | | 15.10 wily | Ignored end of life | | 15.04 vivid | Ignored end of life | | 14.10 utopic | Ignored end of life | | 14.04 LTS trusty | Not in release | | 13.10 saucy | Ignored end of life | | 12.10 quantal | Ignored end of life | | 12.04 LTS precise | Ignored end of life | | 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) ## Notes --- ### [seth-arnold](https://launchpad.net/~seth-arnold) Mosiac hard-coded this pid file name, the alternative is dropping support for Mosiac entirely. Don't be hasty. --- ### [leosilva](https://launchpad.net/~leosilva) from emacs, they added this line only http://lists.gnu.org/archive/html/emacs-diffs/2014-05/msg00057.html not-fixed ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3423) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2014-3423) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2014-3423) * [Debian](https://security-tracker.debian.org/tracker/CVE-2014-3423) ### Other references * * * *