Git could be made run programs as your login if it opened a specially crafted git repository.
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.
11 August 2017
A security issue affects these releases of Ubuntu and its derivatives:
Git could be made run programs as your login if it opened a specially crafted git repository.
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.
The problem can be corrected by updating your system to the following package versions:
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.