USN-3387-1: Git vulnerability

11 August 2017

git vulnerability

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

  • Ubuntu 17.04
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

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

Software Description

  • git - fast, scalable, distributed revision control system

Details

Brian Neel, Joern Schneeweisz, and Jeff King discovered that Git did not properly handle host names in ‘ssh://’ URLs. A remote attacker could use this to construct a git 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
git - 1:2.11.0-2ubuntu0.2
Ubuntu 16.04 LTS
git - 1:2.7.4-0ubuntu1.2
Ubuntu 14.04 LTS
git - 1:1.9.1-1ubuntu0.6

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References