USN-2835-1: Git vulnerability

15 December 2015

git vulnerability

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

  • Ubuntu 15.10
  • Ubuntu 15.04
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS


Git could be made to run programs as your login if it processed an untrusted repository.

Software Description

  • git - fast, scalable, distributed revision control system


Blake Burkhart discovered that the Git git-remote-ext helper incorrectly handled recursive clones of git repositories. A remote attacker could possibly use this issue to execute arbitrary code by injecting commands via crafted URLs.

Update instructions

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

Ubuntu 15.10
git - 1:2.5.0-1ubuntu0.1
Ubuntu 15.04
git - 1:2.1.4-2.1ubuntu0.1
Ubuntu 14.04 LTS
git - 1:1.9.1-1ubuntu0.2
Ubuntu 12.04 LTS
git - 1:

To update your system, please follow these instructions:

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