USN-3399-1: cvs vulnerability

Ubuntu Security Notice USN-3399-1

21st 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 version:

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.