USN-3399-1: cvs vulnerability

21 August 2017

cvs vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 17.04
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS


cvs could be made run programs as your login if it opened a specially crafted cvs repository.

Software Description

  • cvs - Concurrent Versions System


Hank Leininger discovered that cvs did not properly handle SSH for remote repositories. A remote attacker could use this to construct a cvs repository that when accessed could run arbitrary code with the privileges of the user.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 17.04
cvs - 2:1.12.13+real-22ubuntu0.1
Ubuntu 16.04 LTS
cvs - 2:1.12.13+real-15ubuntu0.1
Ubuntu 14.04 LTS
cvs - 2:1.12.13+real-12ubuntu0.1

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.