Exploit the possiblities

Ubuntu Security Notice USN-3438-1

Ubuntu Security Notice USN-3438-1
Posted Oct 5, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3438-1 - 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.

tags | advisory, remote, arbitrary, shell
systems | linux, ubuntu
advisories | CVE-2017-14867
MD5 | dceb7916acf33e0993fb0e947b68f140

Ubuntu Security Notice USN-3438-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3438-1
October 05, 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 versions:

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

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

References:
https://www.ubuntu.com/usn/usn-3438-1
CVE-2017-14867

Package Information:
https://launchpad.net/ubuntu/+source/git/1:2.11.0-2ubuntu0.3
https://launchpad.net/ubuntu/+source/git/1:2.7.4-0ubuntu1.3
https://launchpad.net/ubuntu/+source/git/1:1.9.1-1ubuntu0.7


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