Ubuntu Security Notice USN-2835-1
15th 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
Summary
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
Details
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 version:
- 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
1:1.7.9.5-1ubuntu0.2
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.