USN-3438-1: Git vulnerability
Ubuntu Security Notice USN-3438-1
5th October, 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 be made to run programs if it processed a specially crafted file.
Software description
- git - fast, scalable, distributed revision control system
Details
It was discovered that Git incorrectly handled certain subcommands such as
cvsserver. A remote attacker could possibly use this issue via shell
metacharacters in modules names to execute arbitrary code.
This update also removes the cvsserver subcommand from git-shell by
default.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 17.04:
- git 1:2.11.0-2ubuntu0.3
- Ubuntu 16.04 LTS:
- git 1:2.7.4-0ubuntu1.3
- Ubuntu 14.04 LTS:
- git 1:1.9.1-1ubuntu0.7
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.