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Gentoo Linux Security Advisory                           GLSA 201509-06
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Git: Arbitrary command execution
     Date: September 24, 2015
     Bugs: #532984
       ID: 201509-06

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Synopsis
========

An attacker could execute arbitrary commands via Git repositories in a
case-insensitive or case-normalizing filesystem.

Background
==========

Git is a free and open source distributed version control system
designed to handle everything from small to very large projects with
speed and efficiency.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-vcs/git                  < 2.0.5                 *>= 1.8.5.6
                                                            *>= 1.9.5
                                                             >= 2.0.5

Description
===========

A vulnerability in Git causing Git-compatible clients that access
case-insensitive or case-normalizing filesystems to overwrite the
.git/config when cloning or checking out a repository, leading to
execution of arbitrary commands.

Impact
======

An attacker can execute arbitrary commands on a client machine that
clones a crafted malicious Git tree.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Git 1.8.x users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-vcs/git-1.8.5.6"

All Git 1.9.x users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-vcs/git-1.9.5"

All Git 2.0.x users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-vcs/git-2.0.5"

References
==========

[ 1 ] CVE-2014-9390
      https://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-9390

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/201509-06

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2015 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5