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Gentoo Linux Security Advisory                           GLSA 201702-10
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: NTFS-3G: Privilege escalation
     Date: February 19, 2017
     Bugs: #607912
       ID: 201702-10

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Synopsis
=======
A vulnerability in NTFS-3G allows local users to gain root privileges.

Background
=========
NTFS-3G is a stable, full-featured, read-write NTFS driver for various
operating systems.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  sys-fs/ntfs3g             < 2016.2.22-r2         >= 2016.2.22-r2

Description
==========
The NTFS-3G driver does not properly clear environment variables before
invoking mount or umount.

This flaw is similar to the vulnerability described in "GLSA-201701-19"
and "GLSA-201603-04" referenced below but is now implemented in the
NTFS-3G driver itself.

Impact
=====
A local user could gain root privileges.

Workaround
=========
There is no known workaround at this time. However, on Gentoo when the
"suid" USE flag is not set (which is the default) an attacker cannot
exploit the flaw.

Resolution
=========
All NTFS-3G users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=sys-fs/ntfs3g-2016.2.22-r2"

References
=========
[ 1 ] CVE-2017-0358
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-0358
[ 2 ] GLSA-201603-04
      https://security.gentoo.org/glsa/201603-04
[ 3 ] GLSA-201701-19
      https://security.gentoo.org/glsa/201701-19

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

 https://security.gentoo.org/glsa/201702-10

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 2017 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/